We've stayed at the West Yellowstone KOA but it's on the higher end in price for a KOA and for that price you might as well stay at Grizzly. As I said before, depends on how you like to camp. For a GREAT FS CG, with electricity - both 30 and 50amp, Baker's Hole and they can accommodate you for $20 a night. No reservations so when it's full, we stay at Grizzly. Take our TV over to Baker's Hole, secure a spot, then come back and get our rig. But Grizzly is nice period to stay at if you like resort style RV parks.