FYI, you definitely don't have to use Futaba servos just because you have a Futaba radio and receiver. There are many great options for servos out there (I typically use Savox), and limiting yourself to one brand seems silly.

There's nothing wrong with being brand-loyal, but if you have been out of the game for 4 decades, you'd be amazed at the plethora of really good (and often, inexpensive) servos that can be had from many different brands.