Actually I think it would be fair to say that the devil site occupies a different niche than those previously mentioned. It's my go-to site for "general stock" in the humis - great prices on the low- (but decent) to medium-quality smokes, which are my bread and butter.
For the more premium brands, CBid's prices are generally in the same ballpark as the other e-tailers, but for those, I usually just pick up one or two from a B&M, fortunate as I am to live and work in a metro area with several good ones around.
Cigars International, the mothership of CBid, is another good e-tailer. They have good samplers IMHO.