I think Galaxy S3 is ugly as well and the pen-tile screen isn't appetizing. One X have this brilliant real
hi-dpi screen that provides crisp image, not pen-tile. iPhone 4S is not Super Amoled as well but I would still prefer crisp screen.
And I don't see how quad-core and dual-core(assuming it's US version) would make a big difference they're both enough. I bet less than 1% of the time you would notice the significant difference. And quad-core probably drains more battery.
I love my infuse, too. As we have ICS I'm not thinking of changing it in a year.
Galaxy note N7000- Stock unrooted 4.0.4, planning to go JB.
Samsung Infuse 4G- unofficial CM9 by entropy512
LG-G2x-used for three days with defective screen and camera before I return it- terrible terrible phone.
HTC P3300- from WM6.1
Thanks xda and all the developers!