I sell these bikes frequently and plasmatron's right , but I have to say that personally I don't even prefer disks and often end up recommending the V brakes instead. From questioning many people it seems a lot of people aren't often needing disk brakes at all and some people often fancy the idea of touring, in which case the V brake is the way to go. V brakes fitted with the Kool stop brake kit bring stopping power to a much higher level than the crap standard Shimano bricks which will also scour the rims. Disks can be a pain in the arse at times when that squeaky squeaky noise comes on after time and then the leaver travel becomes too much and heavens forbid you have a spill miles away from a shop and you cause a leak in the system, then you'll have no more brake and you won't be able to fix it on the road side.
I still run V brakes on and off road and I have no issues with them, only that my thumping off road tyre on the front gets stuck when trying to pull the wheel off and out through my narrow front fork and brake combination.
The Iguana frame is almost identical to the Yukon's but for the head tube which is wider to accommodate greater front stresses, but I'm running a Yukon frame and it's still in one piece after some very serious punishment off road, so don't worry too much about that little piece of information.
If I were you, I would ask myself what I wanted to use the bike for. If it's for light tracks and on road use, then a Yukon would suffice, but if you want to experiment with a little off road and steep hills then get the Iguana with 27 speed as it is simply more practical. The great thing about these two bikes is that they come with the rear lugs needed for better rear pannier fitment which the higher race/carbon fibre/full suspension models don't and are often limited to a lighter load capacity.
Also once you have figured out which surface you'll be most likely travelling on then see if you want to switch the tyres on purchase. Remember that any nice shops like ours will refund the difference in price between any standard components and the ones you wish to fit so it is best to switch anything before leaving the store.
My recommendations for upgrades and additions3) on these models are:
1) The standard tyres are for general use on the Yukon and Iguana and are hard wearing and stiff. If you can, get a more specific tyre either for road or off-road, or best yet get two sets and switch them around when you need to. But this recommendation is not the most important at the beginning. Continental Travel Contact is the best road/touring combination with puncture resistant inner, excellent grippy compound, hard wearing and light weight. For hard off road go for a Kenda Nevegal for most of Taiwan's tracks with super sticky compound and great mud clearance, but be warned these Kendas will scrub straight off on the road due to a super soft compound.
2) A MUST** Brake pads on V-brake models. The Shimano pads are the worst ironically, make sure you spend a few hundred and upgrade to the Koolstop pads unless you want to try the really shit brakes before you make the most dramatic upgrade possible.
3) An under saddle bag. You will need a place to keep your phone, spare tube, puncture kit, multi tool, keys,money,snack etc and the under seat bag is the perfect place to store these frequently used items. If it isn't a waterproof variety, then simply take a small plastic bag with you and wrap it up once the rain starts, or else you may get a soggy phone like I did.
4) A MUST** A helmet. Statistics I recently gathered from an American study suggested that you are 97% more likely to die without one in an accident.
5) A MUST FOR NIGHT TIME** Front and rear lights. The Cateye brand is quite nice and mostly assembled in Japan (all but the cheapest model). They are energy saving and reasonably bright for most styles of riding. You won't need a huge bright one for travelling around the city, but you will need more light once far from the street lights and in the dark.
6) A Multi tool. This saves space and a good Topeak one for example has most of the tools you will ever need. These are great especially when just starting out as you will need to manage some fine adjustments to the saddle and perhaps the bars once you begin figuring out where you need to be sitting.
7) A pump. You don't really need one with a pressure meter as you can guestimate the pressure with your thumb, but a basic rule is to be understood. The larger the pump the easier the inflation. The smaller the pump, the greater convenience of carrying and often the lighter weight. Go for a mid size and try to get one that has a tube to the valve and which butts against the ground with a small footstand flap. These make for easier effort and allow you to use just one arm instead of two.
8) Pedal upgrades are not a must , and Giant will cover the replacement within a year if the standard ones start making noises, which they almost certainly will. The standard pedals are plastic on some models, such as the Yukon and these are the worst in terms of wear and tear. If unsure of what you need then play safe and get a nice quality set of platform pedals such as the reasonable Welgo magnesiums for example. These offer good grip with screws that grip into the soles of your shoes and good bearings and seals which will last for a long time. Many of our group use similar pedals for all styles of riding, not including myself however as I am recently experimenting with SPDs, not to say they are better.
Bare in mind both bikes are modified with rigid forks
This is the Iguana's head tube:
This is the Yukon's head tube:
Left: Kenda offroad. Right: Travel Contact
A Good saddle bag:
A new and most excellent brand of saddle [SQ] [img]http://altonsworld.com/albums/album64/IMG_0365.jpg[/img]
What a nicely kitted out Iguana may look like
Please excuse my underpants as they somehow managed to crawl into shot. I swear they weren't there in the viewfinder.