I have been out of the Hobby for 10yrs r so and getting back in. I have been looking for a high end radio and narrowed it to these 3. But I noticed that the Classifieds are filled with the 4PKS. Any opinions?

I would just buy what your local has the most or can get its hands on more readily, All the radios above will do the job....I just changed from Futaba to Ko Propo KIY and have not looked back the new RSX servos are just awesome as well..