I am another Sero guy looking for a step up from his Optimus S, hopefully without the $10 bump for 4G. Honestly, I am pretty happy with the Optimus S, with one exception....I can't type on the Optimus screen very well. I don't know what the problem is...I can type on my wife's iPhone without a problem, but typing on my Optimus is just a big mess, even with Swype. Maybe it is the difference between a 3.2 and 3.5 inch screen? I have a screen protector on the Optimus because the screen seems scratch-prone, and maybe that is the problem? We use the iPhone without a screeen protector because the glass seems hard enough, and replacing an iPhone screen is cheap and easy. The Optimus screen feels like it is plastic (I think I saw it called "fiber-glass", whatever that is). Anyway, I would love to hear how well the Marquee screen works for typing, especially if there is someone else out there who has a tough time with the Optimus.