Hello Denis.
If you are just conserned about the 16 track sequencer,I am shure you don't want to do sequencing on sound modules. You mentioned that you use cakewalk for that. The good part is that the WK2 Oriental playes back 16 track midi files ,if that is what you want then the rest of the features on the Wk2 Arranger like the Turkish and Jazz styles including making your own styles, fits your requested criteria perfectly.
The really good part is that,it fits into a hand bag with alot of power in it.
If you are worried about being getting somthing that will be Old in the market soon, Don't worry my friend you being a software engineer know about this better than I would know that todays thechnology is somthing in the history Tommorrow.....
Regards.
George.
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George Pchakjian
geopch@aol.com