Rancho makes the RSX, which is an "auto adjusting shock" similar to the Edelbrock.
I use Rancho 9000's, which are adjustable, so you can dial in the ride you want, from soft to firm. There are 5 settings. They are very heavy duty, and are not gas charged, which I think provides a more comfortable ride.
I believe those who say they love their Edelbrocks, but I do remember a few people who claimed they wore out prematurely. I've never used them before.
Anything you use will probably be a big improvement over the stock Ford shocks.