When I had quoted the Pre has little to zero lag, that would be in comparison to other smart devices Ive used which is Samsung, HTC and Palm based. Samsung Instinct suffers severe lag in the texting department, and all HTC Devices lag just simply by powering it on. Now I have not had my hands on the HTC Hero yet however when the release supposedly on Oct 11th comes I will be sure to provide my input on the device being a heavy end user and tweaker of mobile devices.