Two things I don't like about it: screenshots are delayed by a couple of frames (what's saved isn't necessarily the same as what's on the screen), and it doesn't allow you to go to an exact frame by fast forwarding... I'm not sure how to articulate this. Basically it has saved benchmarks for a video every 5-10 seconds or so, so you can't skip to a point in between those benchmarks. Maybe there's a way to fix this, but I don't know of it.
Otherwise, yes, it's a great player, and I use it all the time.