I switched from Tweetie to SimplyTweet and am very happy overall. I am not happy, however, with the news that the Tweetie 2.0 update will cost 1.x users an additional $3. I think this is absolutely absurd. I just had to shell out $5 for another Twitter app because Tweetie fell way behind on features. Why should I have to pay again now that it's finally catching up?