I have no real complaints, though I don't know if I'll stock up on them. If you like Bum Genius, I think you will like these. The inner "fleece" is very similar, though maybe a tad cheaper, and the snaps work similarly, just with snaps on the waist like the organic ones.
DS (21 months) wore it for 2+ hours (didn't look at a clock to know exactly) and never leaked. I was a bit nervous...the liners looked a tad thinner than my others, and didn't fluff up as much as I thought they would, but it worked fine. Plus, it comes with 2, so if he had leaked, I could've added more absorbancy.
My only concern really is that the legs seemed a bit tight. Not when I put it on him, but when I took it off, he had a little bit of red elastic lines. We don't have this problem with FuzziBunz (Perfect Size), but I did with Bum Genius when he was chunkier (his thighs have thinned out some). Also, his bum was a tad red, but he's been fighting rash off and on for some reason, and I prewashed the Comfy Rump with regular laundry, so there was more soap in the load. I think that was more baby/user issue than the diaper's fault.
All in all, if you like Bum Genius, I think this diaper would work well for you. I will let you know if the leg thing doesn't happen again....it could've just been that he was in his carseat a lot at the time I suppose.
Re: Ready to review the Comfy Rump diaper...DS wore it.