Ok...a couple days in now on version .570. After the clean install process...battery life seems to be on par with what we've grown to expect from RIM devices.
The only residual bug I experience is an occasional lag when entering text. This lag appears across all platforms where one may enter text...email, texts, IM, BBM, web pages, etc. I never had this issue before on any build so I have to assume it is native to V .570. Still not yet annoying enough to compel a downgrade for me.
OK...hope that helps someone out there! Thanks again for all the feedback.