iPhoto 09 vs 11. Should I stay or should I switch?

I looked into getting 11 when it came out but a lot of people said they didn't like it so I didn't.
Now I'm thinking photostream might be useful if I can use my ipad remotely to display selected images to my clients.
Is this correct?

I think it was iMovie when it went to 09 was actually dumbed down.

I would appreciate any insight on this subject and if 09 has any worthy features that are not in 11.

thanks for any help.