have tried BL5 and 6, now to try BLFF, working better than the others did initially, will repost in a few days after the OS has settled. liking the fact that the BB thinks its running 7.1.
A few days(maybe a week) later, and it's settled in, after all-day use I still have ~65-75% battery left, depending on whether or not I go app browsing on WiFi. excellent job.