I have found 2 used kits for sale priced about the same. which sounds better. one is the eibach pro kit with mach 1 shocks/struts. the other is MRT springs (?never heard of them?) 1 1/4 inch drop, agressive linear rate springs and non adjustable tokicos. If im right the pro kit is progressive rate springs, which I would like to have. Which ones sound better for a daily driver and weekend mountain runner?