James, I think he meant pro modules, not the consumer line.
I have an Integra but I will likely never use it for gaming.
probably the biggest sound difference is that the jv1010 is 32khz, the d70 is 44/48khz. they have different rom sample size, so.. of course its going to sound different.
I know the 8850 is 32kHz, is the D70 actually 44/48 kHz or are its internal samples 32 and then resampled to the outputs (basically, same as JV-1010)?
As for SC-D70 vs JV-1010, similar but different. The SC-8850 and related are cut down versions of the XV and JV line. They have samples from those modules, cut down of course. I think there is an amazing array of sounds really. However, some instrument categories are sadly lacking. Electric guitars, some synth sounds, some ethnic sounds, pianos (in my opinion), and a couple other categories are quite strong in the XV/JV line but missing here. But for gaming, it is a beast and you will love it.
The SC-D70 works as a mixer/sound card also, which is very useful.