From Experience Horton doesn't do that well with turrets. His pilot ability works at range 2-3 and all turret weapons (all two of them that are printed that is) have a range 1-2. So spacing has become the problem for Horton. At range 3 he can't use the turrets, range 1 his pilot ability is useless. If you do get in range 2 it is great but it is hard to get at exactly range 2. You often find yourself at range 1 or 3.

Horton works best with torpedoes. Range 2-3 torpedoes so that would be proton or flechette.