The Dia Compe reverse levers seem to have a bit too much mechanical advantage for cantis. The levers will bottom out on the bars if you don't have the shoes really close to the rims. That's okay as long as your rims are true. I like the reverse levers because I can grip anywhere on the bar.

I've looked at the On One bars. They've come up with some unique designs. I think that the "Mary" bar might work for me. Too bad they're black only and overpriced.