I just recently installed SS 5.0 (after using SS4.4 for like, 7 months!) and I am currently loving it!
There are a few things I have an issue with, such as my widgets redrawing when I change to landscape (even with heapsize, compcache, and the terminal fix), but they are mostly very minor.
One issue I do have is that when connected via wifi, my 3g data still seems to be active. My office gets incredibly flakey data connections, so when I get here, I turn on wifi. unfortunately it seems like having wifi on isnt removing my 3g data like it did in 4.4. I'm still getting intermittent "loss of data connectivity" warnings even when Im running the wifi.
Is there any way I can turn this off? I have a dock in my main office so battery drain isnt a problem, but when I go elsewhere without good data connection, I like wifi to turn it off so it doesnt suck my battery trying to connect.