UPDATE: I'm beginning to realize that amp modeling technology isn't quite there yet. James has been telling me this for a long time, but since I've sworn by Line 6 for so long, I wasn't ready to hear this from anyone, even him.
Something is seriously wrong with my tone, and no matter how many hours I spend tweaking my settings, A/B'ing stuff, it doesn't have the punch and immediacy of most of the high-gain amps on the market, including/espcially the real-life amps it's supposedly modeling! I don't feel it in the chest the same way...
Today I came to an interesting realization while browsing Peavey's site. Check out the "Channel: Ultra / Damping: Tight" video clip on this page"
http://www.peavey.com/products/brow...0456390/cat/68/begin/1/Triple+XXX%AE+Head.cfm
I ran this movie through my studio reference monitors, and as cheesy as this video is (god knows what mic setup, audio compression rate, etc. is being represented here), I can't get this good of a sound through my POD XT (with or without TS 808 pedal) or NI Guitar Rig.
I tried out the Peavey Triple XXX at my local music store a few minutes ago, and I loved it instantly. I have tried Krank, Mesa, Randall, 5150, etc. and I like this amp even more! I don't have to spend hours tweaking, it just sounds great!
So I'm selling my old Line 6 Flextone II-HD head, keeping my Vetta 4x12 cab (since it's got great sounding Celestions in it) and upgrading to the Peavey Triple XXX head. I'm getting it for $850 out the door with slip cover and foot switch. I bought a brand new SM57 mic today and I'm going to see if I can borrow a nice mic pre. I'll reamp all my guitars through this rig and post samples here soon!