I'm still really happy with everything that OS6 has to offer, and I haven't noticed any of the issues that some other posters are encountering. ( cursor movement, etc.)
One small thing that isn't even really all that important, anyone else notice that in camera mode there is no longer an option to take B/W or Sepia pictures?
Aside from that, I couldn't be happier with this current build. Battery life is absolutely phenomenal. With the last v5.0 installed I would typically HAVE to stick my phone on the charger toward the end of the day or else the battery would die. This wasn't that big of a deal since I use my phone alot. It spends the majority of the day with Wi-fi on and I use Pandora quite a bit. (both of which are huge power monsters.)
With 6.0 I'm looking at nearly 85~90% battery life left at the end of day with normal usage. Just out of curiosity, I left it off the charger a few nights ago and got thru till the end of the next day before I was looking at less than 65% charge!
Memory is still a bit of an issue but it's entirely manageable by making sure to shut down apps that are not in use.
Overall I give it a big thumbs up and I still love my BB!