Not fair to compare BS w/Quantum because Quantum is pretty much stock Froyo since we don't have the source code to tweak it yet. Quantum is better than stock as it fixes some FC's and adds some nice features.
Quantum is surprisingly stable and super fast, even without overclocking. I'd say performance is on par with Baked Snack at 1.2GHz. Plus all the extra goodies/changes that come with Froyo are nice.
The only problems I've had so far is Airplane Mode occasionally getting stuck when I'm toggling it on/off for TWS (with a reboot fixing it), and the phone eating a good amount of battery overnight. I think it may be an overactive WiFi, so I tried turning on the setting to let WiFi sleep when the screen is off and will see if this helps.
Overall Froyo is ready - no need to wait for the official release.
Edit: charging seems to be faster now. I went from 32% to 79% in 40 minutes.