Not quite the same "Helix vs. AX8" question, but I am looking to upgrade from an Amplifire to either the Helix or AX8 (recently got the invite to buy the AX8). I really love the Helix concept/aesthetics, as I find myself wanting to quickly change parameters while in practice. The hitch is that I've also had three Line 6 Products in the past - POD, XT Live, HD500 and got a little salty in being charged for upgrades like limited amp packs. I'm leaning the AX8 route simply because I appreciate what Cliff from Fractal is doing in terms of continuous improvements that don't come with credit card requests. Anyone have insight as to Line 6's upgrade path or change in upgrade philosophy?