It has 3 modes (they call it "old school", "modern" and overdrive or something like that). I personally didn't like overdrive at all, it just awful. In other modes it produces heavily compressed sound, and I'm not a big fan of that either. But considering how it should be used - it doesn't really matters.
It has build-in drum machine, although drum patterns are not that great, but you're still can have some fun with them. Anyway it has click, so again - for home practice is ok.
Controls are intuitive, but not easily operable. That's stays same for all devices with that form factor, so it is also ok.
Of course it also has AUX in, so you can play along with you tracks.
So in the end, for the task it designed to use - that's an ok device. Yes, not very versatile sound (at least I found it that way), yes, its hard to operate (at night with lights off trying to find that volume knob somewhere under you bass...), and yes - built in drum machine is not that great... But you're here for practice, not gigging, after all. Without waking up your family at night. And not being tied to some place to do so.