Roel, generally I stay away from discussion like these but I have no trouble at all using my system and a Yamaha style with OMB to sound signicantly better than the Tyros. The effects and sounds I use are many orders of magnitude superior than anything you will find in a hardware based module or keyboard.
As far as the singing goes it is not part of OMB and I will let those who know how to sing comment on that.
The serious composers and screen writers do not use a Tyros but they do use systems similar to mine .....usually without style or midi players.
[This message has been edited by Frank L. Rosenthal (edited 05-07-2005).]