So far, I've only listened to the demos and what sticks out to me is the ringing/boomy toms.. which may not be all that big a problem. The whole set has a live sound to it - the demos have that sound overall. I'm waiting until I restring my bass to see how they sound in a mix.
Did you read the Manual? I haven't tried myself I just use MD to keep a beat but I remember when they were getting it all together everyone was saying how good they were & they say they're the most sampled drums & I remember Sulieman did tons of work as he is a drum freak?.