15” limited choices: Cooper Cobra vs Mastercraft Avenger vs BFG Radial T/A vs ?

I bought a couple of cheap WallyWorldtires for sapes. Yep they were cheap $$$$. So I take them to the local tire shop, the one and only, good guy, speaks a little English, I only know the bad Spanish words, but anyway. He is trying to tell how just how soft the sidewalls are. Not good tires!!!
I tell him I now but I am old school and I want a spare. Tell him I paid $50 each and I will give him $5 each to mount, NO balance!!!
I do by decent tires from him for the other 4 wheels that roll on the roadsl!
I don't need high mileage tires, they will rot off before I can wear them out. Don't need high speed rated tires, I do not drive fast enough to get a ticket.
I don't want to pay the same $$ for a 15 inch 4 ply tire for my old cars that I pay for 8 ply tires for the pickup!!