Like CP, my progression is almost identical: Futaba standard (S148 and earlier), S133 (still in my Honker), HS-81, HS-65 with Karbonite gears. I had a couple of the HS-55's and knockoffs, but found the micro servos with tiny nylon gear trains would spit teeth like a drunk in a bar fight at the slightest bump.
I've been flying 12 gram metal geared servos and for slightly larger planes, have settled on Surpass Hobby (Aliexpress) S0017M all metal geared servos at 17 grams. The S0017M is one of the only true ALL metal geared servos I've found -- most still have a nylon pinion gear. At $4.60 shipped, the price is hard to beat.
I've decided to never buy another servo with nylon gears, only metal or Karbonite, at least in the smaller sizes -- the weight penalty of metal gears is minimal.
CP: Nice to see you pop up in the 1/2 A forum again. It's gotten pretty quite over here.
andrew