The ride is a result of the shocks used. If the springs aren't sagged, then it probably is a good buy. My guess would be your springs have sagged some due to age. Pair them with some Rancho 5000X and you should have a nice ride.
Springs are always better than spacers. If the Pro Comp springs are in good condition I would snag the for that price. BTW - I run 2" Pro Comp Springs and Ranch RS5000X shocks and really like the setup.