Typically the Microsoft phones aren't relevant in a poll like this
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. The other two though, are like asking 10w40 or 20w50
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If you're sticking to the choices above, then +1 for the Galaxy. I don't yet own a smartphone, but I do use the Galaxy from work all the time and it works great. For a while I was stuck with an iPhone and couldn't have loathed it more. I'll shut up now, before I draw some fanboy's wrath
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If you're not sticking with the poll choices, then the One Plus 2 is a good option. Unlocked and feature heavy for cheap, but the downside is its by invitation only, so you'll be waiting a while.