Great Drum Machine: the Dr. Rhythym DR-5 rhythym section. In my opinion (I"m a weekend warrior, not a pro) sounds GREAT recorded. Very unique, intuitive set of features- great drum sounds, totally editable patterns, built in guitar tuner, midi tracker, 3 tracks of instruments (patterns built in plus you can make your own)- so it's not a drum machine, it's a whole band in a box!
The only drawback is that it came out in 1994, before the computer/internet thing really caught on- so there's no good way to download things from the web and import them into the machine. But other than that the thing is great! Even though it's old it's been a consistent 'top seller' in catalogs like musicians friends, etc.
I have many recordings I've done with Dr. Rhythym playing the drums. Check out the song links (and a video tour of my studio in wihch you can see the device briefly) at my web site:
http://www.angelfire.com/falcon/ufo14
I use a combination of live drums and Dr. Rhythym, but I used Dr. rhythym exclusively on these songs
http://www.mp3.com/original_fuzz
The song "Josh Pollack's got the funk" and "song96" were me playing all instruments and dr. rhythym doing all drums
http://www.mp3.com/efb
The song "shake it" was all Dr. Rhythym on drums because we didn't have a drummer when we made that recording.
Enjoy!
UFO