Im really frustrated with this phone! first of all, this phone lags too much. and secondly, the touch allignment is not accurate no matter how many times i reset the allignment. typing sms without stylus really can piss you off! , now the biggest problem with this phone is, when i try to send email, i have to "add recipient". when i tap "add recipient" , it allows me to type the email address or choose from contact list. but whats frustrating is, after i type or choose my recipient, THERE IS NO "SEND" Button. There are " Delete" and 'Cancel" buttons. How the hell am i going to send the email????

The sending email problem was solved after restarting the phone. And yes, after disabling the Samsung UI, the lag reduced so much. really crappy UI by Samsung.
Overall, now im quite satisfied with the phone responsiveness. But i think the screen alignment should be fixed especially the bottom right part where it is hard to click accurately.