I do both, it depends on the stand the amount of cover between me and their "expected" travel lanes etc. I have one stand I almost always use a hanger screwed into the tree because I will almost always see them on the travel route well before they get their, two others that are very situation oriented. Deer can pop up with little to know warning and while I have good cover behind me to break up my outline etc. movement will get me busted in those stands.
As for type it's just a long reach screw in for the tree, can't remember the brand.
Destroyer 340; Easton Flatline; Grim Reapers
Not as Mean Not as Lean but still a Marine
Billy Bob: My nose is dripping on my balls...