S2 can be summed up as an incredible screen mounted on a wafer thin phone with a ridiculously flimsy plastic packing.
It's almost a engineering marvel. It's more of a large screen with built in phone rather than being a phone with large screen. Its so light it feels like holding a floppy disk (poor guy, extinct). A desire HD battery would probably weigh more than this device.
With a dual core processor n super AMOLED Plus screen, the only downside I see is : no Nvidia Tegra2 awesomeness and this phone cannot substitute a paper weight!
The best ever paper weight fone would be iPhone 4 followed by Droids n dHD :-)