I have, among other bikes, both a cast wheel Bonnie and a Street Triple.
I ride the Bonnie 50 to 1 over the Street 3. Nothing about the Bonnie s "better" in any way, shape, or form. It's not as fast, can't hold a candle to it in the twisties, never gets up on the back wheel, and all that.
But it's way more fun. YMMV.