max weight for everything, basically. I do carry a 170g destroyer for big tailwind drives, its hard to get a max weight high speed driver up to cruising speed in a big tailwind.
I like the consistency and wind fighting abilities of max weight discs. I could eek a bit more D with lighter discs, but I think there is a consistency trade off when you go that route. I like things to be as simple and uniform across the board as possible. Fewer variables= more consistency
All that being said, if you ever get into the habit of weighing your discs yourself you will find that factory weights are off by a ton. So while all my drivers are factory marked 175, actual scale weights vary from 172-178. So even if you have a specific factory weight you like, unless you are weighing discs yourself chances are you in a 4-5 gram range. I don't think it really makes a difference.