One word:
HARDIGG!
I used to think Pelican was the heat until I kicked a Hardigg case out the door of a Blackhawk. Inside was an AVA (aviation vibration assessment) kit, which is basically a series of highly sensitive accelerometers and processor displays. After the fall, all items were found to be still in calibration, and were completely undamaged. The case had but a few scratches.
In comparison, a Pelican with a few Multimeters inside was accidentally knocked off a platform less than 10 feet high and cracked on the corner that impacted the ground.
The resins used in the hardigg cases are second to none and seem to absorb shock and transfer it to the foam lining better than the pelican cases.
For your app, you should be able to pick one up for less than 100 bucks. Pricey, but it will last longer than you do!