My' 62 Monterey is on air at all four corners, so take my shock recommendations with a grain of salt as the dampening is quite a bit different with air then mechanical springs.
Front: RideTech Shockwaves. Been on the car since day 1, probably close to 50,000 miles - 0 problems.
Rear: QA1 adjustables. These have only been on for about two years. So far they are holding up well.