just left this comment in another topic:
A tried 3M chrome which was just a test piece before they even came out with it. It was ok. Not much stretch at all and it did pull back on a concave part because I used no primer.
Then I went with HEXIS which was horrible. Super sticky no repositioning and if you pull it back it will leave a line that wont disappear even if you heat it up. Pulled back everywhere even with primer. ( hexis is not compatible with 3m primer). And hours later of installation wrinkles appeared here and there. I have never seen this before with any vinyl. Waste of money.
Then I ordered Avery and it was a huge relieve. No pull up. No mystery wrinkles . no BS. Installed nice and it has a much better/darker chrome color than the hexis.
All chrome vinyl "burns" super easily. Even if you use only a heatgun on medium heat.
By the way if you do some search there is another chrome wrap topic already.