@mroneeyedboh: Natural Light. My ode to cheap beer.
One area I frequent has a weak Sprint signal, and a "decent" Verizon signal. It would take "excessive" roaming, for 3 consecutive months for Sprint to flag you for abuse. So you have some breathing room. I remember my G1 had an option to manually select the network available. However, I'm not entirely sure that having a network option isn't just a customary feature of a GSM device, and not Android specifically, since its obviously compatible world wide.