Rexr, what year was your Gen1?
I came from a carb'ed SV650 SK1, to my injected Gen1, and apart from slight fluctuation in the fuel injection when cruising on fixed throttle, it's as smooth and predictable as any bike I've had. No snatchyness in the throttle at all. And no noticeable power dip at 5 to 6k rpm some report. I've just gone back from a Yoshi exhaust to the original (as Yoshi broke), and no change in smoothness of power delivery. I've yet to check ECU to see if it's been re-chipped, but performance seems pretty standard otherwise.
That said, I'm aware some Gen 1 owners do report snatchy throttles, as do early Mille owners, albeit Tuono's were chipped differently to Mille's to smooth up power delivery I understand.
Not sure if mines been 'sorted'. Any other Gen1'ers experienced snatch throttles, and is this due to std fuel injection set up our just poor throttle cable set up?