it might seem to you a lot of trouble, but i think you should demo different amps and decide for yourself. there are numerous threads that discuss which amp to go to. search amps+pod xt
try the following set: connect your pod to small mixer, then use to output of the mixer to feed one or two smaller active PA boxes (RCF or the like). thus you will get great tone and a nice way to feed the FOH system.
feel free to contact me if there are further questions...
rock on mike
Atomic Amps makes flat frequency response amps just for amp modelers. They do not color the sound like a traditional, midrange-happy guitar amp. Probably the best money you'll ever spend if you are making the switch from amps to modelers.
I haven't found a 'regular' guitar amp yet that sounds good with the Pod family. Sounds amazing thru a computer with high-end monitors and thru a PA.