Drums - BFD vs. DKFH - need in depth insight!

I am looking to pick up a midi / computer drumming program for the studio. I play drums myself and would prefer to track live on singer / songwriter sessons but not all of my clients have the budget to have me set up for that. I have a small space and can't have my kit mic'ed all the time, oh well. So I am looking for a "life-like" drumming substitute for acoustic and rock, mostly. I have seen some of the other posts, but none of them go into a lot of detail.

I am curious about BFD and DKFH in terms of how each rates on the following types of details:

Can you swing / randomize hits?
Does it provide waltz time and odd time capabilities?
Can you select stick vs brush vs rutes, etc?
How adjustable are the dynamics?
How realistic are the fast patterns (rolls, flams, fills)?
How realistic is the hat and ride playing (opening and closing hats, shoulder vs bells patterns)?
Can you use your own samples?

Stuff like that. I am looking to purchase on Monday so any help would really be really appreciate it! Thanks!