My old unlocked S3 running cyanogenmod already does everything I need well enough. What extra would an S5 get me that is worth the $780 cost of an unlocked device?
Especially at that price, it boggles my mind why Samsung didn't use premium quality materials, not just obviously cheap out again with more plastic. Really Samsung... would it kill you to spring for the extra maybe 25c per phone on some actual quality case materials for once?