If your looking for the "best" suits for men, be aware that a good tailored suit can get pricey and cost you quite a bit. If you dont mind paying more search your local classifieds for "mens suits" and find stores that specialize in only suits and that do tailoring as well. I would never order a suit from online since the fit of a suit can be kind of strange at times and its best to try them on and have them tailored to your body type. If your looking for cheaper options you can always find decent suits at department stores and then have them altered by a seamstress too fit you properly.
I like the place Mr. MAC I always go there for my husbands suits.