I'm a Wicked Mike's guy, but no surprise there. LemonBomb, Warm Blueberry Pie, and Hot Date are probably my favorite flavors.
I can also tell you from experience that RocketMan makes some of the best sauce on the planet. Anyone with a basic understanding of fermentation and a bucket 'o peppers can make a "burn your guts out" sauce. Making a hot sauce that's best described as smooth, balanced, and complex AND brings the heat is another thing. If he started producing them commercially, I'd be the first one in line.
I was lucky enough to try the first three sauces Emmeriaa made, as well. Guy's got a knack for it. You get nothing but flavor for a second, and then there's an immense rush of heat. His sauces are not for the faint of heart.
As far as commercially made sauces go, I can't get enough Iguana Mean Green. It has a really bright acidity, a great consistency, and a heat level that's low enough that you could chug it. A tempting thought. Really, anything from Half Moon Bay is good.
There are quite a few on my "don't like" list: the McIlhenny stuff, sriracha, Cholula, Blackie's Best.
There are a bunch on my "never had it, but really looking forward to it" list. Lucky Dog and Heartbreaking Dawn's both sound like winners in terms of the "not just heat, but flavor" thing. There's Texas Creek; it's obvious that Ann knows what she's doing and is as hardcore as it gets when it comes to quality control. And then there's Pex. By all accounts, he makes a hell of a sauce (hell of a good guy, too). Cappy's Brainstrain sauce is a no-brainer (pardon the pun). After all, who better to make a Brainstrain sauce than the man himself? Speaking of the man himself, there's the grandmaster of fermentation, Chili Monsta.
So many sauces, so little time.