Upgraded to 4.6.0.216 last week, when I was a rank newbie to Blackberry (but a Palm/Treo user for over 12 years). Watched in horror as my data was backed up (I hoped) and device wiped clean and new OS installed and data restored. Breathed a sigh of relief when everything worked great.
Did not have any problems with the original OS that came with my AT&T Blackberry, so cannot comment on how the new OS is better, but it has been totally trouble free for over a week.
Bold Best OS ?
.210
The only problem with .210 is every subsequent Beta has led me back.
What to do when something just works.. Break it and fix it again.
I believe May '09 will be substantial and in the meantime Amusing Betas.