I own the Samsung E-317 (almost identical as E-316). I am very impressed. Great quality/features/reception. No experience w/ the Sony Ericsson T637, but the Samsung is a folding phone and is newer.
I have the option of getting any of these phones for pretty much the same price but I can't decide on which one to get. The only 2 things I care about are the batterylife and reception. CNET rates both of them as 7.6, so which one should I get?

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