I'm quickly becoming a tire snob as well. They've gotten too expensive to just do whatever. We just put Dueler Revo 2's on the 05, replacing the Transforces on there. For another hundred bucks, these seem like they're going to be a lot better tire, I have never been happy with those Firestones. They wore out quick, this is the 6th set of tires on this truck since we bought it, with only 110k miles on it. I'll be happy if these last 40k with the way it gets driven. Got 50k out of the Dueler RH-S's that were on our Suburban Z71, and those went back on. Very happy with them.
On my G8 I'm running the Blizzak LM-60's (245/45R19) that came with the car (in addition to the Michelin Pilot Sport A/S Plus that were on it), and they're OK, but very much performance oriented, not traction. Not sure what I'm going to do for summers (picking up a set of Camaro 5 spoke wheels), but likely either Bridgestone or Michelin.
Tires are a never ending subject, I'd love to go work for one of the manufacturers and give them a piece of my mind, LOL.