My GPS lock time is down to seconds I can count on one hand. That's with a correct 'accuracy' of 15m or so. I still have some issues with it, but they seem to be rare and long between. I've noticed a slight drop in battery performance, if anything at all. I've yet to encounter any signal issues since updating.
Also, I used GPS Status to clear my A-GPS state and download the assistance data (every 24 hours). Over the three days after doing that, and before the update, my Maps GPS reliability improved and lock time went from 1-10 minutes to 30 seconds or a minute, with occasional instant locks. Please note it took two days or so to notice a significant change after doing this, although I cannot figure why.
EDIT: My battery dropped 7% while typing this. All stock, using browser, on 4G, with Maps running in background for half of the time while on auto brightness.