Thx for your input. The XT-1 is pretty cool; I've hadn't heard of it. My Variax interest stems from the acoustic models, and it would amazing to switch guitars and presets directly from my HXFX. That said (and especially given the bugs that you point out, above), it seems like programming a song's guitars into the custom controls on the Variax itself may work (i.e., acoustic on selector position 5, tele on #4, etc.). Too bad they didn't include VDI on all Helix products, but I get the up-sell potential.