I forgot about Exustar! They make really good stuff as well, it's a very popular brand in Taiwan and it's starting to sell well in Europe.
Vivimax is doing a lot of advertising on cycling magazines but I've never tried anything from them.
For the price of the helmet there's been a lot of debate recently. The problem is that as long as we're talking about good brands (not crappy helmets made by ripoff companies) there doesn't seem to be any improvement in safety from a 30$ helmet to a 200$ one. Differencies are usually in materials (lighter, better feel on the skin), design (more aerodynamic, better air circulation) and look.
If I was a pro rider or a time trial athlete I'd invest more money in a helmet for all those factors, but as someone who uses the bike 20kms a day to go to work and 50/100kms in the weekend just for fun, I'd say the look of the helmet is more important than aero profile/weight.
The main problem from cheap helmets is not usually their safety but their cheap design: you look like a mushroom. A better helmet will have thinner sides made of a better material that can give the same protection as the thicker one, while at the same time giving you a non-mushroom look.
It's a bit like carbon bikes: a cheaper carbon frame is cheaper vecause the carbon has lower quality and needs to be used in larger amounts in order to achieve the required stiffness/strength, while a high-end carbon can be pressed into thinner tubes without compromising the durability of the frame.
When the pro rider told you to get a cheap helmet that you feel happy about wearing he was probably referring to all this stuff, so if you can find a cheap helmet from a decent brand you can go for it, just match it with your bike and clothes.
Decathlon would be my first stop for a helmet, the quality is pretty good and they have a large range of colors. I've checked their UK website and along with their own brand they also stock cheaper Giro helmets, but you'd have to go to their store to see what they have available in Taiwan.