Yeah, the TR-606 is a great instrument and I like the ability to add and subtract parts on the fly. Still, the TR-606 is limited to something like 7 sounds, whereas the Drumulator has 12 sounds.
I'm able to store something like 66 patches on the Drumulator and program some pretty serious sequences.
Let's take a look -->
(ps. Upon further review the KPR-77 concedes)