We've got a couple and I've had no probs with them at all so far! I've heard that the new version coming out at some stage will be more absorbent (with a slight price hike too I think?), but I've just ordered some more, with the intention of just making some microfleece topped boosters to chuck in if I ever require more absorbency from them.
I'm just realistic about them, they don't go on first thing in the morning for that morning wee - but I'm pretty sure that if I chucked a booster in I'd be confident with them for the morning.