SAMSUNG GALAXY S3 OR BLACKBERRY BOLD 9900?!?

[george]

Getting a new phone tomorrow and can't decide between the Bold or the Galaxy.

I first wanted the Bold because it looks like a nice sleek phone and I will be able to contact my friends for free on it via BBM. It's quite small and looks professional which suits me. My only concern with it is that people who have Blackberry Curves say they are awful and wouldn't recommend it. However as this is a Bold and a better phone I don't know whether the same will apply.

I saw the S3 today and looked at all the cool features, it's the kind of phone I would like but it seems too big and lightweight. I can get it on a cheap contract so the price isn't too much of a problem.

Can anyone help me who have had experiences with these phones and recommend the best one?
The contract is for 24 months so I want a phone that will still be decent then
What is Facebook and Twitter like on the S3?

Thanks in advance