Android phones, apps and tablets

Alternatively, buy a phone that uses an OS that was designed from the ground up to work in low power, restricted memory devices. :P

You mean one of those from that company that won't be around much longer? Pass.
Besides which, I'd now rather have a phone that only lasts a day and does useful things.
If I wanted one that lasted a week I'd buy a Sony Ericsson.

GA2G, as for the hardware stuff, I don't get into it much, there's some discussion here.
Mobile Power - Tegra vs. Cortex A8 vs. Snapdragon - [H]ard|Forum

I will say, the bloke from Qualcomm at droidcon was great though and I'd love one of their test machines if only I had the coin and some time to mess about with it.