Everytime this question comes up, I suggest the ROX risers. They are a better design from the standpoint of versatility and multiple positions. They are very well made, very strong, and a little cheaper than the gen-mar (which is a very robust but static design).
Being able to experiment with different positions is great.
Also, if you plan to spend time offroad, adjusting them way forward and up makes for a sweet bar location for standing up. The 3 minutes it takes is worth it - I keep a 6mm allen wrench in my tank bag. Also a 8mmx10mm combo wrench to adjust my levers. Invest a little time the first time, and it's quick every time after.
You may or may not need to get new brake lines. I would either way...braided steel makes a big difference.
[FONT=Tahoma][B]07' DL650 [/B][/FONT]
[B][FONT=Tahoma][I]It doesn't stab worth a crap, and the milk dribbles out, but otherwise it works great...[/I][/FONT][/B][B][FONT=Tahoma] [/FONT][/B]