iPhone 6 owners opt for leather instead of Silicone on the Apple Store.
I am against putting iPhones in cases. The iPhone is made to be used and carried around without a case. Yes it will get tear marks, but its like a hardwood floor, it ages well. For the iPhone 6 I can make an exception as its design is so ugly it needs to be covered up. I am talking about the backside with the antenna lines around the edges and the protruding camera lens. A backside covering case is the solution.
Most iPhone 6 owners opt for the Apple designed iPhone 6 Leather Case selling for $45 to hide the hideous backside of the iPhone 6 and give it protection. The iPhone 6 Silicone case selling for $35 ranks #2 on the Apple Store, but that might be caused by the shipping delay of 1 to 2 weeks.
There is of course also a iPhone 6 Plus Leather case from Apple selling for $49. This case is the 3rd most popular on the Apple Store.
On Amazon the best-selling iPhone 6 accessory is the ArmorSuit MilitaryShield Apple iPhone 6 Screen Protector. I guess to biggest reason for using such a screen protector is to get the highest possible price when reselling the iPhone 6 in two years.
The best-selling iPhone 6 case on Amazon is a a clear case from Spigen. Now that case is misguided, as it does not hide the iPhone 6 backside.