Firstly I would like to say that I absolutely love the feel of the iPhone 6 Plus without a case. However the fact it appears to have been crafted from greased eels and my job as an engineer means that a case is an absolute must for this device. Over the last 9 or so months I have had quite a few and in my humble opinion these are my favourites:
1. UAG in Black
Solid, thin, grippy and has withstood a few drops that would have smashed a naked phone to smithereens. Top case
2. Griffin Survivor Core
Well made, very grippy sides, thin and light. The only downside is the clear polycarbonate rear scratches and shows wear very quickly. This case has saved my phone numerous times.
3. Apple Leather Case (Black)
Really thin, grippy and luxurious to hold. Looks very nice on the phone. I solely use this one for Sunday best as it were, dinners out, weddings etc.. Not the most protective as the bottom of the phone is exposed but I love the look and feel so much.
Hope this helps anyone looking for a decent case.