Can't speak about cerekote, but my recent duracoat experience was great. I used their shake n spray kit to refinish my 1911 after some mods. Love the way it turned out, and it could not have been easier.
Surface prep is key. Clean and degrease until you think it's done; then do it once again. The more effort put into the prep work, the better the finish results. DO NOT cut corners here or the finish will suffer greatly.
Good luck with whichever you choose.