Yes the poly pitch stuff clearly does eat cpu, but otoh you don't have to use it if you aren't willing to make the trade-off.Poly Sustain (Mono), Line 6 Original infinite sustain with a modulated poly pitch engine built in
I would like to hear the XT Live with Helix IRs. I was trying to decide between the AX8 and Helix. While the Helix did sound better than its predecessors, I couldn't get past some of the "artifacts" I heard that reminded me of the XT Live. My conclusion was that being able to load IRs made the difference. Needless to say, I went with the AX8.Been awhile since i've heard Line6 stuff. Quite an improvement since I had the original kidney bean pod. Not bad at all.
I had one last year. Really useful for its size but barring a few areas I never bonded with it or found as inspiring or satisfying to play through as my AX8 and sold it to help fund my IIII've gass'd for the HX Stomp a few times for it's tiny size and to have all the Helix sounds - but alas, trying hard to keep my gas in check