To me the improvements from Samsung's grunty Hummingbird to the Exynos is small, and even smaller where there is nothing to take advantage of the new power (actually Mali400 is worse than sgx540 eg/textures).

If the SGSII came with a good quality keyboard I would make the change. But for now my options are kept open, and my current device loses value

Perhaps the SGS II "L" with an OMAP4430 ??