i have not heard anything bad about their boxes. i don't have any square ones , only the cpl or me styles. i have seen the rollers that sit under the crossover boxes and they apppear well made. i have seen people complain about the depth of drawers in one series but i am not sure on the one you are looking for. give vince a call at montezuma, he owns the company and is an excellant source for info. if i recall he may be the source for some of the other brands out there or they are coming from the same factory. either way i think they are good value. id oubt that they are as tough as the slant fron boxes though. they are indesructable.