I bought this after seeing some videos online of DubFX performing some street live looping (he is amazing if you haven't heard of him), and also Nastya Maslova and Roz Firth.
I'm always looking to create music easier and quickly and this seemed to fit the bill nicely. Very simple controls, well laid out, the only extra thing I learn't from the manual is regarding the automatic power off feature that wasn't apparent without going through extra menu settings.
Before I even looked at the manual within 5 minutes after getting it out of the box I had managed to get all 5 tracks running with different effects with just a mic running into it. I'm looking to add a small mixer to select different instruments/keyboards/samples to integrate that as a different and quick way to come up with new songs and ideas.
The only complaint is that it misses the option to have individual foot switch controls to operate the separate record/loop buttons (via 5 x foot switches).
If you are primarily a guitarist you need to look at the foot pedal loopers but otherwise this is great.