The GWS NARO HP servo (GWSNRH/BB/F) has a ball-bearing supported output shaft, and Futaba connectors (which are great for connecting to microcontrollers!). It comes complete in a blister pack containing all mounting hardware and servo output arm options.

This is what GWS has to say about their NARO High Performance Servo:

• Capable of more than 300,000 cycles (unloaded)
• High Quality Japanese Motor
• High Resolution Japanese IC Chip
• Customized Quality Potentiometer
• Ball Bearing
• Best Choice for Micro Helicopter & Airplane
• 4.8V Speed is 0.11 sec for 60 degrees rotation
• 4.8V Stall torque is 1.2 kg-cm (16 in-oz)
• 6V Speed is 0.09 sec for 60 degrees rotation
• 6V Stall torque is 1.4kg-cm (19 in-oz)
• Size: 22.0x11.24x21.35 mm
• Weight: 8.8 g (0.31 oz)
• RoHS Compliant