Well, the TC Ditto X2 Looper is certainly worth the money I threw at it! It's a pretty cool little practice/jam tool. So far, I've had plenty of fun with it, just recording simple things for it to play back at me (like the Chorus parts in "Peace Of Mind" and "Knockin' On Heaven's Door", for example) so I can practice improvising over those parts. For "Peace Of Mind", it also lets me practice the Lead Guitar-intro with a Rhythm Guitiar strumming the Chords, so it's definitely a lot more fun to learn covers now :) No offense to GT, of course. The lessons here are great, but I couldn't load a Backing Track for "Peace Of Mind", so the Looper came in handy. I'm not even sure if there are backing tracks for the Song-lessons here to begin with...

I haven't tried putting a MIDI-Backing Track into the Looper yet, but it's on my to-do list. If it works, I should be able to improvise something over it, and see whatever happens... Hopefully, it's possible to record guitar-parts this way and have them added directly onto the backing-track file. That could make recording stuff a lot easier... and more fun :)