Re: Trying to hard?
With IPhones, it's a pretty good life cylce, since even though there's a new device on a yearly basis, prior devices are still both backward compatible and still have the hardware to last for a couple of years (the IPHone 4S is a good experience of lasting well beyond the normal expectation)
With windows phone, yes, some are high lend with very distinct features (like profesional camera capabilities) and others are aimed at entry level users/low cost.
Androids to provide a good low cost entry, but there really isn't a defacto high end version since each provider has there own take on what is considered "high end". (aside from processor and screen capabilities)