Textra. Wow it's so quick and smooth! Has one bug that's really annoying, doesn't work with blocking mode, which is sad. I just emailed the developer and let them know. If your looking for a new non heavy sms messager then look no further. I had go sms pro, very buggy always and laggy, chomp was great but for some reason I can't send mms and had to uninstall. Handcent is good but not really fast. Textra has something going.