I have great luck with session drummer but I also write my notes out individually altering velocity's slightly to give that natural sounding kit by making it sound,, well human, or as much as possible.
I know it sounds like it must be a pain staking process but once you get rolling on it ,works great because you can group sections of verses and such and duplicate and alter slightly on those as well
like the video I did about "last touched"
http://www.youtube.com/watch?v=ruAnAPR6-hQ sure it seems like a lot of work but as you can see, making it sound human isn't too difficult.
the controls are straight forward, easy to use.
does BFD or AD drums sound better. yes I think so, much better sound coming right out of the box.
but session drummer also has a drag and drop sampler, something the others don't do.
I like to take dry samples and add effects later, one by one on each individual kit piece.
I know BFD and AD does this as well. but ive just enjoyed session drummer a lot and think if cake wanted to could really cash in on it.
it has major potential, specially with Roland samples.