I went to GC the other day hoping to run across a Katana 100 watt 1x12 combo. Nope. They had the new Line 6 Spider V combos though and I tried out the 120. I flipped through a couple presets and was not impressed. So I just started editing the patch to get what I wanted. I turned off all the effects and just tried to dial in a basic Marshall crunch tone. Navigating the UX was cumbersome but not difficult. It didn't take long to dial in a totally usable tone though. I had a pretty sweet sounding patch in a few minutes that would clean up when I rolled back the volume and then when I opened it up I could get some nice controlled feedback. I didn't have much more time but I have to say this amp is definitely a very worthy contender in the $300-500 modeling rig arena. The Line 6 FBV Express MkII foot controller has a tuner and expression pedal builtin for the same price as the Boss GA-FC, the Spider V has builtin wireless support for the G10, and you can edit the Spider V with a smart phone whereas the Boss requires a computer of some sort. So the Boss Katana really needs to deliver on the tone to be as compelling because the Line 6 is only 70 bucks more. I'll reserve final judgement until I can spend more time with it and compare the Katana but either way it seems that Line 6 have a winner with the Spider V 120.