after you get a big screen, i don't think it's possible to go smaller. i always though the 4.3" of the hd2 was huge, but then i had to type something on my brother's iphone, and it felt so weird. i've gotten used to 4.3", but i agree that 4" is probably the sweet spot. holding the hd2 to my ear is kinda awkward, but i can't imagine typing on my g1's 3.2" virtual keyboard anymore.