I record with an electronic kit all the time (my primary instrument is drums).
I use a Roland TD-9 custom kit and several sample libraries, BFD2, Superior Drummer 2, and Steven Slate 3.0 Platinum. They all sound better then and of the actual drum modules out because they use actual samples.
I have a sample of Superior 2 up at:
http://www.youtube.com/watch?v=8sqKa...e=channel_page
If you go this route you need a decent audio interface to avoid latency issues. The 2box that was previously mentioned can use these sample libraries.
Going down this route is pretty costly, if you are looking for a cheaper solution check out the new Roland TD4 kit, it has been getting pretty good reviews. Yamaha also makes kits on par with Roland for less money imo.
Adam