I wanted something for my 6 Plus too. There were plenty of options for the 6 but very few for the Plus. After looking Friday and Saturday, I just ordered a Case-Mate Naked Tough case on Sunday but that's not a soft case. Have you tried Best Buy? If Rocketfish has come out with a 6 Plus case they almost always have TPU cases. Your other option might be the silicone ones that Apple put out but I don't know how soft they are, plus they're a little expensive. I'm hoping I like this Case-Mate I've ordered, the ones for the 5/5s got good reviews so I am hopeful. I also got a tempered glass screen protector to go along with it, never used the tempered glass before but it seems like a good idea.