Anybody have or had both the 710 and 521 and can comment on how the build quality compares ? I currently own a 710 and would like to upgrade to a W8 device. I'm not sure I want a phone the size of the 925 so I may try the 521 for now until I can see the 925 up close. I know the tradeoffs with a $130 phone and my 710 has been solid so I'm just wondering how the physical feel and build compares between the two.
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