Re: NPD....NPD....NPD.....NPD
A little bit of a learning curve, but I'm getting the hang of it. Biggest thing was knowing when it's recording and/or not.  Here I am, thinking I'm just noodling over some riff, then BAM!.....There's my noodles the next time the loop comes around. So needless to say, I like the erase-last feature.
I can say, if you've thought about getting a looper, get one. It's a pedal I feel any guitarist could enjoy.