Well....what I'll say is, it's good but got a lot of issues that needs to be addresed. I use the official Twitter app a lot and I think it needs more features and some UI tweaks. The problem is, it seems Twitter Inc. has forgottent and abandon the app for some reason and I'm saying this beacuse the app doesn't get updated...worries me a lot. There are a lot of other 3rd-party Twitter apps out there but for some reason, I like the official app very much and always pray day and night for it to be updated with lots of features. Just read online that the web app has been updated and looks good...but I don't like the web version, I just want the app....please Twitter, do something for us :(
I think the official app is faster and smoother than most. I don't use Twitter extensively, so for me it's just fine. Whatever missing functions there may be don't seem to affect me in what I use it for.
Really its all up to the individual opinion. Its free. Just try it and see what you think.