The VA-7 seems to play the sequences pretty good, with their soundset. I've played a PSR8000 and thought the operating system was the best to work with.
The Korg stuff I used was the i3 and I thought the styles were great but the sounds as solo where alittle weak. The SMF playback of gm stuff was weak also.
I've played the x1 thought it was ok, a little noisey, I think it was easier to search for the holy grail than it was to navigate through it, but its probably because I used to other op systems.
Basically living in CT I'm very close to alot of places that have each keyboard alone, but no one has them together.
It seems like everyone is leaning towards the SD-1, Uncle Dave has a great suggestions about personalizing sequences, but the rate I change my keyboards, I would go crazy every year.
I'm more into the technology rather than the learning the complete keyboard and getting the most out of it. But that is just my human nature.
Anyone know where I could try a SD-1 in CT????