Hmm, thanks for the tips about looking out for the app store variants on Androids.
As for what you mentioned about pre-paid; how do they calculate the data usage? My only concern with data usage on a data plan was if they counted data usage while near wi-fi, which apparently there's a work around for by disabling the cellular network(?).
I'm also considering looking for other deals besides just pre-paid, but let's say I do still go for pre-paid.. I can still use my own wi-fi on my phone, right? Like without a contract or data plan or anything?