Looking at the 2000 manual it appears to be very similar to the 740, while the 1000 is similar to the 640 which has only one DSP. The sysex is almost identical which is what you would expect for XG machines. Don't forget, the 740 and 2000 have essentially an MU100 synth locked up inside them except that you don't get the MU100 panel (that would be a tremendous feature - you would never need a 'workstation" with that as well as the main panel). I use the inserts a lot because I don't use the panel organs due to no touch response. The inserts give me the ability to mimic some of the panel organs and I can get the layered effects of the panel organs by using the R1 and R2 voices. Also, which the manual doesn't mention, if you turn on a voice with sysex using the Multi Part function, you get an extra layer to which you can add all the insertion stuff. I use my laptop for all this connected via the "to host" connector because it makes the whole thing portable. You can use something like XGEdit or XGWorks for this though they are really designed for sound cards and rack mounted synths and can only address two DSPs.

Bryan