CS4 users...will I be happy I did it??

[Randa]

If you have used Photoshop Elements and now use Photoshop CS4....please give me some feedback as to the main features you feel make it worth the upgrade.

I just got an email from Adobe saying that, as a user of PSE, I could upgrade to CS4 for $299. That is still a massive chunk of money...but now is the time to drop it if I'm ever gonna

So, what do you think? I won't be using it for any of the designing aspect (unless someone wants to make a trip to Oklahoma to teach me
What features will I notice most? What do you think I will love? What will I be most likely frustrated with??

Also, is the bridge portion better or practically the same as PSE's organizer? Will I still want Lightroom for the organization it provides?

Thanks for reading my rambling questions!!