I hear you though. I had two 6. Both bent a little. I baby my phones too. The first one I noticed bent after a day. Apple replaced it. The 2nd one I was doubly careful with and it had a slight arc in it after a year but otherwise looked brand new.I have the ultra hybrid. It, along with the candyshell grip was my favourite for my iPhone 5.
Spigen had a sale on and they're one of the few case makers who have a UK store. So I got the capsule and the ultra hybrid.
The capsule I personally find much better than the hybrid but I miss the grippiness of the candyshell.
Can't really decide now between the candyshell grip and the griffin journey.
But think I'll stick to the candyshell as it has more lay on the table.
But since the bendgate malarkey (I had a 6 which bent after a week of being babied - and I mean babied. My 5 looked brand new after 3 years use that's how much I baby my phones) I'm a little nervous as I know the speck is a pain to get off the phone (I know it's daft the 6s is a totally different material and is much much stronger than the 6 was).
I had a Candyshell Grip for it, and I hated taking it off. Loved the case, hated the removal. The 6s is much ugh stronger so it should not be an issue, but last experience is sometimes hard to shake.