Hey i'm trying to pick the right Hitec servo for a Proline PRO2 Buggy. Not interested in any other brands for this rig, so please only post up if you have Hitec advice.

I'm looking at four models.

1- Waterproof/Digital/High Voltage - 5646WP
2- Economical/High Voltage/Digital - 5565
3- High Voltage/Digital/Metal Gear - 5685
4- Metal Gear/Digital - 5645

They all seem to have plenty of torque & speed, (looking for roughly 150 oz/in. torque, and quicker than .20 transit speed)

Hitec lists several of them on the site as rated for 2S, but this rig will have a 3S batt. Any potential problems?

Thanks!

Well, of your list, I would chose the 5565. Just as strong and a little faster than the all the others, metal gears and all the goodies plus its able to run at 7.4V. Good price point too.

Don't worry about running 3s as your ESC will regulate the voltage to your servo. If the BEC is adjustable, run it at 7.4. If its not adjustable and at 6V, you are still good to go. Good luck.

Great, thanks for the info!