If you check the macrumors forum site, which, by the way is very robust and active, you'll see that the majority of apple fans prefer Spigen or Tech Armour. I went with Spigen ultra hybrid in crystal clear. I'm of the camp of 'thin' and 'clear' cases that don't add bulk or cover up our...
Cases are personal preference items. I like Spigen products myself. There are many good cases out there like otter box, but I don't like the bulk they add to the phone. Especially now with the larger, slimmer iphone 6's. The new spigens offer good protection but don't add bulk. My opinion only.