I have a love/hate relationship with mine. Having the storage & organization is great, but giving up a foot of bed height is a high price. I also think the "ammo cans" could be larger, which would help get back some bed space. I don't regret getting them, but I keep wondering if I could have built something more efficient and less expensive.
If you have a topper/shell (like me), it might be better to find another solution, because the available height under the shell is very limited. If you're using a bed rack, or have an open bed, I think they're a great, weather-resistant option for storage.