Southern Comfort-

They are very different sounds IMHO. The bass sounds from the Roland boards simply blow the Korgs factory bass sounds out of the window- but this is to be expected as a big part of an 8MB boards is dedicated solely to bass sounds. However, I think that the Korg basses sit really well in a mix unlike Alesis QS series basses etc.

As for drums, the acoustic drum sounds in both are excellent. But I much prefer the toms in the Roland board as well as some of the ring and piccolo snares. The Korg has better processed/rock snares IMHO. The open and closed hi hats are much more realistic in the Roland board but I much prefer the ride and crash cymbals in the Korg!!!!

If you use both instruments with a sequencer such as Cubase or Logic (in Logic set up a mapped instrument in the enviroment) you can easily assign the sounds from both to your chosen master keyboard for the best of both worlds!!

PS- Korgs new dance/synthe board has some killer new (non realistic) drum kits and sounds! I wish that there were more than 2 slots in the Triton as I'd love to add this board to my other 2 boards! Oh Well.