Yeah, TweetDeck is a good choice and notifications actually work for Facbook. The last update to Facbook added Places, and that's all I really wanted except for notifications. There's an f-plus app on the market that should hopefully get notifications for Facebook working soon.how about tweetdeck?
I use the launcherpro fb widget for news feed...it opens directly to the app too, which is nice.....f+ for notifications...and go chat for chat. They all tie together nicely until the app itself serves more functional.