Which one does everybody think is better i am mostly looking for crushing distortion(dethklok style) and some good clean tones.which one can deliver them the best.
I used to use the XT live...and still do for recording work... and it's a good unit, however in a gigging environment it makes your sound go very tinney... so you end up turning your treble all the way down to try and compensate....

and that's why I got a valve head and I've never looked back

i got the metal shop pack for my line 6 and it can definalty brutalize any and all audiences
Get a Line 6 Pod X3 Live instead. IT is the newer and far better version of the XT Live.