My personal Opinion is that Apple has done a great job with IOS5, and things that matter to me in terms of improvements so far as as follows:
Originally Posted by rickyricardo
1) Messages - Exchanging SMS style messages is at last easy and built right into the iPad device, and is free between other Messages users.
2) Wireless Sync - So far working flawlessly for me on beta5 for both my phone and iPad. Very good.
3)Notifications - A vast improvement over the old system, although still not as good as NotifiedPro was IMHO. Still, they are well done and I like them.
4) iCloud - Shows a great deal of promise. Again, it is slick, seamless, and well integrated even if it is not as flexible as a service such as Dropbox
5) Stock App updates - Minor UI enhancements, e.g. in Mail (better sidebar), Safari (Tabs), Twitter (integrated), iPhono (stream) make a cumulative "big" difference to my general day to day use.
BUT, as great as that all is, when I compare that to the flexibility I will be giving up (initially at least) based on the contents of this list, I'm not sure I can give up my 4.3.3 JB just yet - http://www.ipadforums.net/jailbreak-...ak-tweaks.html
I like it so much I bought a 2nd unit to restore it. I have no doubt iOS 5 will be great, but I don't think it will allow as many options. My favorites (some sound small but they make a tremendous difference in heavy usage): customizable page and folder usage (that is huge, I'm not talking for looks), expanded Safari (gestures, download managers, adblocking), iFile and access to folders and programs, enhanced backup, enhanced system controls and settings, etc. I absolutely love vanilla iPad, but with jailbreak it's what the iPad could be.