Ron JR / SPEKTRUM HS 821 'servos are very good, use a6 volts Rx batteries pack with them, you 'll get 80 oz of torque and speed will increasetoo,I 've been using them for long time with no problems in CP planes with .46 to .60 glow engines.

As you mentioned it's useless to start a discussionabout wich ones are best, but for sure most pilots will agree JR servos are way ahead in tech from other brands.

Also want to mention that HS 821's are not standard, those are digital servos and much better than Futaba 3151 or Hitec digital's.

Hope this helps in your desicion.