They're part of the Swatch group and I think in general they're considered good watches, about on a par with Tissot - some would argue better. They seem to have a big following with the Americans in particular because I think they're historically an American company.
At that sort of price point I don't think you can go wrong with one, it's a nice watch and they seem well respected.
IMO the kudos comes from making a decent quality watch at a fair price, the often quoted saying with Hamilton is that you get "a lot of bang for your buck".
I think Rado, Tissot, Seiko, Hamilton, etc, make some nice watches and they're reasonably priced, they might not get you bragging rights at the yacht club but you're getting what you pay for and they're respected as quality brands.