G'day I agree with the above. I like Hitec servos and I use them with my Spektrum, JR and Hitec radio gear. I also have a number of 3001 and 3003 servos and a few JR as well but the Hitec are my favourite.

The HS-425 is a great basic power servo and is ball raced. The HS-475 was the next leg up but I think it has now been replaced by the HS-485 which has similar specs. For heavy duty the HS-645 is a stump puller at a reasonable price.

I don't use digital servos, I prefer the simplicity of the analogue and I don't need the extra flexibility of the digital servos.

I usually use HS-422 in simple trainers and for throttles.

I have only had one Hitec Servo fail. It was a new HS-422 which was working when I bought it but dead after I installed it. I ended up using it for spare parts to repair other similar servos. That is out of a total of at least 100 servos. I have never had one fail in flight and only a couple of damaged gear sets after prangs which were easily replaced.