I agree with what everyone is saying so far. It seems like common sense to say that the set in mint 9 condition would be the best (and probably so), but cards this old with the history that they hold, I believe that mid-grade would be my favorite and most appealing. Reason being because I like the fact you can see the age and wear and still appreciate it...but that's just me.
Don't get me wrong, I love the sharp looking near mint T206's and maybe one reason I choose the mid-grade is because I could never afford the higher grades. But I sure have grown to love the low to mid examples
