Got 2, one for my PU, and a second for an SUV. Love them. I got the offset magnum for the PU; one drawer is wider than the other, and both are tall enough to place scoped rifles upright. In a pickup length I can keep all of my varmint / predator hunting gear available and locked up. I also have a locking tailgate for additional security. I got the Allweather coating ( but I have a tonneau cover too ). You really can park a small ATV on top of it.
Downside - hauling regular PU stuff is more problematic. You probably won't be hauling much mulch or gravel in your truck bed.

. But, I love mine. Well worth the money.