I actually don't like modelling stuff.
I stretch to good quality digital effects, but most of the stuff I like is analog.
I'm doing some recording right now using little 30 watt el84 powered boutique amps, and I'm pretty happy with the results.
Most of the line 6 stuff I've played with seems okay at first, but it just doesn't have the feel of a really good guitar amp.
I was interested in the guitar port for doing stuff just to muck around, the versatility is great, but I wouldn't use one for professional work.