I've been going over this forum since I'm waiting on my "out for delivery" Helix from MF. I've been using a KPA Rack/KR for a couple of years, and although it sounds great(MBritt), I'm trying to downsize. I never looked into detail about the Helix until I got on the AX8 wait list last Nov. I reall got into both units while I waited for the Fractal. The Helix UI sold me, and I ordered the Helix, followed 2 weeks later by my AX8 invite, which I declined. Don't know if I'll sell my Kemper, but time will tell. I'm really interested in the new L6 G10 wireless also. If the Helix is what everyone says, and I'm not doubting it, the rack the G90 etc. will move on!
Btw, I heard Andy(L6 factory designer/demonstrator) demo the unit at GC a couple of weeks ago, and it sounded very good thru 2 K12's. I don't think there will be much sound sacrifice at all over my Kemper, once I dial it in. Stoked, should arrive early this week.