Similar to above:
M2s or M22s with sub.
Otherwise, M3s.
Or if you like extra bass, M3s AND a sub!

Buy good mounts and good screws and if in doubt, put them into a stud and you won't have any issue. In the least use wall plugs if going into drywall.
Home Depot sells alot of good quality screws.

"Those who preach the myths of audio are ignorant of truth."