I use HiTec receivers with my JR8103 and JR6102. They're excellent. I also used Futaba shift ones with my Futaba TX, but sold that when I got the HiTec Optic6, which had more options than the Futaba.

HiTec is one of the best kept secrets for value in our hobby.

For example the HS225 micro servo. They have a couple of receivers that are real good and real cheap.