Opinions wanted for replacement Rear Spring selection. Thank you

How do Eaton springs compare to ESPO's price wise? Just curious.

I put some ESPO coil springs on the front of my 49 Dodge and the front sat too high until I cut one coil off each side. Have Eaton heavy duty leaf springs on the rear of my 59 Dodge and 56 Plymouth. Eaton's springs look good and the cars sit just where I wanted them to. But they are not cheap.

Eaton claims they were an OEM supplier and have factory blueprints for the springs they sell. Have no idea if that's true or not.