At school we've used KG Gunkote, sold by Brownells, for many years and have had very good results. I've had a Gunkote paint job on my carry pistol since 2012, and other than wearing off on the high spots, it's been fine. No rust, no flaking, or any other issues.
A co-worker has had numerous finishes on his 1911, including Cerakote, and he's worn or rusted them all. Steve is hard on finishes. He has "the touch" and can probably rust plastic.
We have a representative from Brownells come down to teach what we call an "Alternative Finishes" class and he does a great job. One of the things Dean is huge on is keeping everything spotlessly clean and free of contamination. We change out our blast media for new stuff and all parts are completely and thoroughly degreased using Brownells TCE. Once "clean," everything to be painted is handled using gloved hands. This may seem a little extreme but we don't have problems with chipping or flaking.
Gunkote is easy to apply, but needs to be baked. This can be problematic for barreled rifle actions if you don't have a paint oven. The temps we bake at can also warp plastic parts. If we have something that can't go into an oven, we use Brownells Aluma-Hyde II in the spray can. You can bake Aluma-Hyde, but it isn't required. This is what we use on plastic parts or parts you can't or don't want to bake. Aluma-Hyde seems to be fairly durable.
I've used the spray can versions on Durakote and it went on smooth and looked good when done. Usually Durakote requires mixing and the use of a sprayer, but they've had a spray can version out for a few years now.
A lot of our customers ask for Cerakote, because that seems to be the most popular finish right now. A while back everyone asked for Durakote. When we explain that we use Gunkote, they usually don't have a problem with that. I don't recall anyone coming back to complain about flaking or premature wear.
Just in case anyone's interested, Brownells will be sending Dean out again this summer as part of our NRA Summer Gunsmithing Program. He'll be here week 1, June 19th to the 24th. Here's our catalog-
http://www.mscok.edu/academics/depar...r_program.aspx (Click where it says 2017 Catalog). There's a cool picture of Dean on page 4 painting some stuff.