definitely worth it. I know for my E7 it has really made a difference and opened my phone right up. And I found it rather easy to update. But having said that I would agree with the last few posts. Have a good look at the benefits and if you like, then go for it. If you do decide to install it, just remember you cant go back.
Honestly though once you have it, you will wonder why you ever hesitated in the first place. This is just my opinion, you need to be comfortable with it, so do the reading it wont take long.