I used to have a Boss DR-5 it was ok but like all drum machines I found it very annoying to program and it just sucked all the inspiration and fun right out of me.
Now I use
Fruity Loops and I could not be happier. It's so simple to use and it's actually fun. I never thought I would say that about programing drum parts.
I went and bought some great drum samples as well as sampled sounds out of the Boss DR-5 before I sold it. Now I can still use the sounds from the DR-5 but like I said before it's fun now

Well that's my 2cents I don't think you could go wrong with Fruity Loops.