Upgraded a week ago to SGS III (I9300). It has nearly everything I want from phone. Rooted it immediately after gazillion (ok, six!) OTA upgrades came thru.
I use two Nokia Lumia 800 and am quite pleased with it. Do not dig much of new wp8 OS as of now but that could change.
Now from above reply I find the smart phone developing is too quickly. Now I use iPhone 4S Samsung Galaxy.
I'm using Nokia Lumia 900. But planning upgrade to Lumia 920 soon. Well since first Windows Phone 2010, I switch everythink to PC from Mac. I love WP7. Its just works out of box not like android. Still like windows 98.