All the Harpers are nice. The red is very nice. Anyone would be happy owning that card. The 5 that end up with them will be happy, at least for a while, hopefully forever.
The Walter Camp is a historical card with a historical autograph. It will always and forever be that way, and it's the only one. There will never be as many Camps as there already are Harpers. The jury is still out on Harper and will be for a long time.
It will be interesting watching the value of these two signatures in the coming years and decades. One is already proven and will end up being much, much rarer than the other. Will the other become a legendary star keeping current prices up? Will he become more significant than the man that invented football? Time will definitely tell. I'd be happy either way. I love legends!