What is the best twitter application for 9700? Is there a free one that others can suggest? Thanks

I use UberTwitter. It's free... I'm not sure if it is the best but it does what I want (I'm a light user of Twitter).

Wirelessly posted (Scared of sea bunnies)

+1 for UberTwitter. Great free app.

I'm still partial to SocialScope, but it's STILL in private alpha testing (almost a year later). A close second is UberTwitter.