Well,
E-mu and Ensoniq stuff normally sounds good. Very good. But the quality of their hardware (reliability( is ...not wonderful to put it mildly.
If you don't like Korg, I understand. It's very individual.
However, do check out the Triton. If you don't like it's on-board acoustic samples - there are lots of sample CDs and ways to expand that synth. One thing that I always liked about KORG is a bright, punchy sound, good FX and fast (smokin' fast) dynamic voice allocation.

Yamaha EX series were/are pretty damn good.
I personally like the on-board acoustic sounds. I can say the same about the MOTIF series as well.

Since you need a synth for studio work, Kurzwell will do a great job at that. Just don't try to gig with it.

-ED-