I'm finding the Pyro much more enjoyable now. Though there seem to be some maps (well just one so far, but I've only played on three of them) where he just cannot ambush. The map in question is basically a huge bridge that separates the two bases, and each base has a sewer.
I'm also having fun with the Scout, but I got depressed after reading that two shotgun shots should kill any class but the Heavy. I swear I pumped 4 shots into a Soldier and he didnt die, but now I realize I must have missed nearly all the shots (I could have sworn I saw blood...).