Super-simple solution - resistive screens instead of crappy, useless capacitive. Then, even 3,5 '' screen is big enough. Seriously though, 4 inches @ 1024x600 sounds like sweet spot. If we're keeping with sane touch technology - with capacitive, you need single pixels as big as your finger, to make it usable for anything real (no, browsing facebook and youtube isn't real enough...). /Estel