I like my 30mm SW-Motech risers. Because of the steering angle they move the bars about 1" up and 1/2" back. Check your own bike for slack in the cables, I wouldn't go further on mine. Seems to be less vibration too, or the vibes aren't as bothersome.
I tinkered with adjustable risers, and a couple of differnt bends. Finally just got TharBars...wouldn't trade them for anything else I've ever seen. Good thing is I can drop them down for track/spirited riding, or pull them back up and back a bit for a cruise.