I'm looking at the airtronics 94357/94358 and the digital 94359/94360. The 94357 and 358 are about $80-$85 bucks each. The 359 and 360 are $120 each. Are they worth the extra dough?

None of those servos are digital. The 359 and 360 are the same servos as the 357 and 358 except the 359 and 360 use all metal gears and have the heatsink case. They are all good servos, but at $120/ea, I would look at the JR 9100 series.

Are digital servos worth the extra money? The JR has some super specs, but for regular, non serious racing, will the Airtronics 357-358 do?

Digital servos do have a few advantages, but the 357 and 358 will do just fine. I still have some of them. There is nothing wrong with those servos. They are probably some of the best analog servos available.

Thanks Scott. Just thinking twice before I make the purchase so I don't have to regret it with the price difference. Also, I'm assuming the JR or Airtronics will work with the 3PM?

Should I get 1 9100t and 1 9100s? Or both of one type? Which is better for the steering and throttle?

9100S is for speed the 9100T is for torque. I would use the 9100S for steering and 9100T for throttle and brake. but it also depends on what type of vehicle

To use the HRS mode of the 3PM radio, you have to
have digital servos. If you have analog servos you have
to use the PPM mode. The HRS mode with digital servos
is the way to go if your racing.

I would agree with lil-bump. Best way to put it would be: Whatever you were going to use the 357 for, put the 9100s in that spot. Wherever you were going to use the 358, you could use the 9100s or the 9100t. If speed is more important go with the 9100s, if torque, then 9100t. I chose the 9100t for the steering in my truggy because those things are so darn heavy with big tires.