Ok taking what I consider the "best"
Bandolier -- Unique bandoliers over 75%, preferably over 80% are the "best" (those rare +90% bandoliers I'd consider "perfect". Best I have is "Grim Famine" in my first post here.
Longrifles -- Range is king with longrifles, a longrifle without range is nearly worthless. APS is second, Reload speed third with Capacity and Damage tied for fourth. The "perfect" longrifle would have bonuses to range, APS, Reload Speed and then Capacity or Damage. I hate seeing suppressed (i.e. noise reduction) or hit chance bonus on longrifles, as they're nearly worthless -- and they usually come instead of a different bonus I'd rather have. Best I have is "Defiant Grit" or "Lone Moxy" in my previous post.
Level 40+ Melee -- Don't have a lot of data on melee above Level 40 (not had a lot of luck, nor crafted anything that level), but with melee the only things that really matter are APS and Knockback. A player that does mostly autos will find APS more important while a player that does mostly played missions will prefer knockback. Best I have is:
Glasses -- Really unless you're raiding (and taking a lot of injuries - which would affect your hit chance), the color of the glasses doesn't matter, the only thing you're looking for is the range bonus. Glasses are usually equipped with longrifles, which have a high hit chance to begin with, and if equipped on a Recon, the hit chance is already at 99% -- before the hit chance from glasses is applied. I could post a picture of plain grey "quality glasses" here as my best, but that would be kinda silly.