i belong to both pcsc and riverbend. i use both. pcsc is just easier to do load development at 100, they have a nice 300 yard range (unless you try to drive to the targets). its more laid back than riverbend but riverbend is much larger with a ton more members and they are stricter. pcsc allows full auto (you need to bring documentation).
riverbend has 500 meters (actually 484) for silhouette and 600 yards with pits. riverbend's 'shotgun hill' is supernice, like a country club golf setting. riverbend has lots of competition matches and anyone can come and pay to shoot during a match. i dont think riverbend allows full auto. they allow a full auto gun, but you can only shoot it semi. i think this is one area that is currently under discussion.
there are all kinds of folks at pcsc, when i am there there are more black rifes and folks practicing competition pistol skills than other types. they do have a shotgun area. i havent used it though. i suppose there are some fuds there though i have yet to run into one, at least with a 'fud' attitude. there is one guy there that shoots old black powder trap door 45-70s, colt peace makers and drives a bonnie and clyde era car.
pcsc has a waiting list, you can probably get into riverbend, though the cost to start is steap.
from my perspective, the drive time to both is the same from where i live. there are days where i shoot at both. do load development at pcsc and then go shoot long range at riverbend.