Taidong City sort of has stuff big cities have. It has a Carrefour, but it doesn’t have a Costco. It doesn’t have a lot in the way of shopping generally, though you won’t have problems finding all the essentials. It doesn’t have a cinema. It has a few nightlife options. I personally am not so impressed by the limited number of restaurants I’ve been to, but others think they’re okay (though I never hear people absolutely rave about them). The kind of restaurants I’ve been taken to tend to be the kind of places that some Taiwanese think foreigners would be interested in (maybe they actually are), but they’ve been those kind of pretty run of the mill Asian-fusion or quasi-Western places that exist everywhere here that I don’t think do either thing particularly well. I generally tend to avoid those or “Western” places generally simply because I think they’re kind of over-priced for the quality and quantity of the food, but maybe you’re not so fussy.
Really, the reason to live in Taidong is not for Taidong City itself, although that’s fairly easy to get around, doesn’t have much, if any pollution or congestion, etc. (though the drivers are perhaps even more insane here, it’s just that there are fewer of them). The reason to live in Taidong City is because it’s very laid back and there is very easy access to outdoor pursuits and generally nice scenery, a lot of which you will have completely to yourself. You can really be out of the city in nearly complete countryside in ten minutes. There are tons and tons of places you can go if you’re into hiking or cycling, and there’s surfing too.
I previously lived in Taoyuan city for about two and a half years, and I’ve been living here in Taidong County (not City) for almost two years (with about five months in between the two spent travelling). There are certain adjustments in terms of the pace of life and also how backwards some people can be, but I wouldn’t leave here to live elsewhere in Taiwan now. I don’t even really like going back to the west coast or north at all now.
Kending doesn’t have a train station, so you’d need to either take a bus or private transportation to Pingdong City. Kending is also not a city in any sense of the word, and you’d need to go elsewhere to get a lot of things. Personally, I’m not so sure I’d like to be there. It’s a real tourist town that must be fairly dead during the week, but is packed to the rafters on weekends.
Taidong does have a train station, but you pretty much can’t get any more remote in terms of train stations. It is quite isolated generally. There is talk of faster trains in the future, but as it currently stands, Taipei is about seven hours away and Gaoxiong is about three hours away.
Whilst you won’t have any work issues, you might need to think about your girlfriend. The work options for Taiwanese are fairly limited in both Kending and Taidong. Where I live, some people have their own little businesses, the majority of people are pretty poor farmhands, and the middle class people work for the government. There are a few wealthy people who own hobby farms or tourism businesses, but those people often made their money elsewhere and then moved here. In other words, there aren’t a lot of options simply because there isn’t a lot here (in the way of industry or larger businesses generally). When we first came here, my wife looked for jobs and it was difficult to find anything reasonable at all (in terms of pay and time off each month), especially since there is very active affirmative action (favouring aborigines and locals generally) that clearly favoured “jobs for the boys” over competency, punctuality for job interviews, etc. That’s actually part of a wider general attitude that you might encounter here, but wouldn’t become fully aware of until you’d been here a while.