F700BT. Purchased pre-update, but update was applied immediately after installation last weekend.
Of course, the first two are well known and oft-discussed, and yes, I know about the hacking effort that's been done to remove the boxes.
1) Boot time!
2) Annoying blue boxes. Yes, I've seen the post about hacking the unit to remove them.
3) System occasionally reboots immediately after the first boot in the morning. Takes double the time to get started.
4) While navigating, screen went totally blank today. Radio still playing. Did not respond to any controls, including the volume knob. No way to reboot without pulling over and shutting off the car.
5) TTS can't figure out how to say some things. Local highway is called "highway 237". TTS system tells me "Merge onto 237 State Highway 2, (pause) 37 east" instead of "Merge onto State Highway 237 east." Probably something wrong in the map data, but it sure is annoying.
6) Speed-sensitive volume doesn't work very well.
7) No RDS data on FM. Come on, the cheapest radios have this. Shouldn't need digital (HD or Satellite) to get this.
Can map to home, and it has a phone number set also, but can't use the phone icon in the lower-right when navigating home to call home.
9) Wow, you have to turn the volume knob really far to get any significant volume change.
More coming, the more experience I get. I predict this list will get to at least 30 items before I've had 2 weeks of experience. We're on day 4 right now.