For any kind of speakers whether in-wall, in-ceiling, or standalone box speakers, I recommend the big brands - RBH, KEF, Monitor Audio, Revel, Dynaudio, Focal.
Like everyone says, unless you have absolutely no other options, I would do at least in-wall speakers for your front 3 speakers, preferably the main 5 "bed" speakers. Then put the 2 or 4 Atmos speakers in the ceiling.