Old school Alesis always end up being the drum kit on my tracks.  I hace other machines but the Alesis blends in well with other tracks which are usually 1 track drums, 1 track bass, one track bass and one track 6 string most of the time.  I busk and have demo's that I give away. The Alesis sounds analog. There is a learning curve but I think they all or most has a learning curve.  As an aside, I've had a Alesis machine that is 8 years old.. stayed on most of the time and is still working but showing signs of "old age" however it still works but the volume is down and I have to yank up the recording volume for recording... I'm sure you want an accurate simulation of drum  sounds don't worry about being old school and purchase the SR 16.