Re: Best training group, for advanced combat/tactics?
Depends on what you all need.
Is it firearms training? rifle? pistol? shotgun? precision rifle? carbine? Static Security Training? Mobile Security Training? Force on Force training? CQB / CQC training? Active shooter training?
Hell the local IDPA grand master near you can give a hell of a pistol class, but that does nothing for CQB / CQC needs. same can be talked about with the local CMP instructors. They can train you all in the use of a rifle, but again it might not fit your needs.