Mine force closes quite often too.
There's many things about the official twitter app that I like but I like being able to post certain things to both twitter AND Facebook which Tweetdeck allows. I also prefer the usage of multiple accounts for twitter as just another list that you can scroll left or right to get to.
I've also used Seesmic Ping wich allows you to post pictures to Facebook as an actual picture on the timeline (as opposed to Tweetdeck which posts as a link to twitpic, yfrog ect...)
If I could get an app that combined the features of the Twitter App with the multiple account/platform features of Tweetdeck and the picture/video posting capabilities of Seesmic Ping I would be a happy boy.
Considering that Twitter actually purchased Tweetdeck is there any chance that they will ever update it? or did they solely purchase it to get rid of the competition?