Nothing short of a VK-8 comes close to a G70/E80. The organs in Sonic Cell and GW-8 are sampled, and then run through a Leslie sim (they do have the VK Leslie sim, but not too many parameters to adjust, and no distortion, pre Leslie). But the reverb IS post-Leslie. It's a totally different sound chip and architecture...
As I said in my GW-8 review, the problem is that most of the organ sounds already have a slow Leslie sampled into them, so running through a Leslie sim gives it a weird 'phased' sound. There are enough without, though, that if you are as picky as me, you can still dial up a few good ones.
But I feel a real B3 sim needs drawbars. Without them, it's just a preset machine.
One of the primary differences between a Sonic Cell and a GW-8 is that the Sonic Cell allows you to build your own Patches, the GW-8's are all preset. I was kind of hoping that I could create my own splits and layers that could be simply one Tone, as although there are two parts for the keyboard, they are strictly UPR, LWR or layered. You can't have two UPR sounds and no LWR. Just two whole keyboard sounds. There ARE a few patches already layered, some pianos with strings, that sort of thing, but I would have liked to make some myself...
But it's only $895
!
Mind you, the Sonic Cell is even less!
My next adventure is to try and see if I can get the Sonic Cell to work well with my aging KX-5 strap-on keyboard. It's what I prefer to go out and jam on, as it takes up NO room on stage, keeps you mostly to one hand playing (which is great if you are just sitting in with a band, less temptation to overplay!) and is cool as heck!
But it's MIDI is primitive at best...
Only two MIDI channels (1&2), only PC#'s up to 64, no CC00/32's. OTOH, the pitch strip and expression controls are the best of ANYTHING, falling under your hand in a very natural fashion for those that have played guitar or bass...
If I can finagle the S.Cell into using those PC#'s as call-ups for Performances, I can have splits and layers, and great sounds in a portable package (a REALLY portable package!) with far less compromise in sounds than my current MGS-64 Super Canvas, which is the KX-5's current module...
I'll let you know how this works out...