I bought it and I'm sending it back...
main reason is that it's really a pain to get it to sync to your record, and you can't really use the headphones to adjust it because the headphone channel has to be on the record that's playing in order to calculate the bpm, and even when you do adjust it the adjustments are incremental, there were a lot of situations where one increment would be a little too high and the next lowest increment would be a little too slow, never right on, that might be ok if you just use it for acappelas but I want to use it with beats, and it would often just drift, plus the loops are continuosly cycling, the button doesn't start it looping, just un-mutes a loop that is already in the middle of the cycle, and if you haven't used it in a little while it will be way off, so you have try to get it back on while it's train wrecking like crazy, instead of just having a start button to throw it in right on time, you waste too much time with that, I'd rather be able to start it when I want and then have to beat match it manually, I also have a CDJ1000 and I like looping with that much better, only problem is most of my music in on vinyl...
this just confirms what I've believed for a long time, that any kind of automatic beatmatching is bull****, you want to believe it can really happen, but it doesn't, not well enough, close enough maybe for a wanna-be dj toy, but not the kind of precision I expect, and even when I mess up my beats a little it's a human error and it sounds human, not like when the machine messes up it sounds really annoying!