I own a Blue Point lift lid service cart and never had a problem with it.
I bought it used but the drawers slide nice (bearing slides) and close and shut tight. I swapped teh crappy lock over to a KRL lock, but other than that they are well built boxes.
Downfall is that the prices are high and should you attempt to resell, you will get far less for it than a true Snap-On cart/box due to it being a "blue Point" labeled cart.
Good part is parts are always available should you need them and if you buy new or thru a driver, any issues for your lifetime will be covered under warranty, including lid shocks.
They are not cheap and there may be and likely are more cost efficent boxes/carts out there, but the build quaility of those carts is nothing short of top notch in all teh BP carts I have seen including my own.