I got to sew on a new model Juki industrial at a recent quilt show. It's got a lot of electronics, and after having them go out after only 2 years on my domestic Juki, I'm not real thrilled with the warrenty - but they may have something different on the industrial. I still really like the Juki, but my DH really likes the Brother industrials. The Juki I tried had a servo motor.
I was super impressed with how slow it could go. Any industrial can sew your fingers off, but very few can also do the slow part. I've done factory sewing in the past so I'm use to sewing on them.