I've tried the vendor versions of TFWPKY 1969 from Crucible and The Chance from Future War Cult. From these, I've found myself favoring The Chance in combat. TFWPKY 1969 is a good HC, but I liked shooting more with The Chance as well as favoring the perks. Fortunately, the vendor version has Field Scout because 6 rounds wouldn't cut it.
Vanguard sells The Devil You Don't with a low clip size so that's a no-go. Even with Field Scout (got it from an engram in NF), I wasn't feeling it like the others. If you get Venation III (Dead Orbit) or Red Hand IX (New Monarchy), those are also solid. You can only get those via drops from NF, from a legendary engram, or from ranking up with the respective faction.
If possible, try to do HM VoG because Templar drops one of the best weapons (not just HC) in the game: Fatebringer. You will fall in love. <3