We have used Red Head on two trucks and now a BlueTop on another. Great product either way. BlueTop is a spin off from Red Head, but they seem to be making a name for themselves. We spoke with them before purchase and they gave us the spill. Great folks. I would do business with either of them.
I did try a borgeson several years ago and the box wouldn't even bolt up to the frame properly. After modifying it to fit and using spacers, the truck was hard to steer lock to lock when parked. After raising hell they did give us our money back but we ate shipping both ways. That was when they were not using stock 3rd gen boxes, instead a close fitting Delphi box. To my knowledge, they are now using OEM steering gear boxes. Surprise surprise. They have lost my business.