I got my pool filter sand at Home Depot; had to search for it back in the garden department with the pool stuff. $5 for a 50 pound bag.
I'm happy with it!
PFS would be my choice too. I've used playsand before and ended up with a rock hard sandbar attached to the bottom of one of my tanks. It's also very dirty before you clean it. PFS was clean straight from the bag. It didn't even cloud the tanks.