I've got a Bedslide Contractor 1.5k model with a 3/4 pull. BS has a full pull slide at this point, but personally I'd go another route. BS' accessories are handy, but expensive, flimsy, and plastic. I've had to reenforce things like their side trays with my own brackets, which shouldn't be necessary given the price. BS would likely say they choose materials with weight and corrosion in mind, but I don't buy it.
The slide decks themselves are alright, but even those flex a good deal if you get too aggressive with the tie downs. The t-track eye bolts they sell themselves are plastic as well. Just nothing about the things gives you confidence.
Anyway, I don't mean to sh*t all over their product. I've kept my bedside through 3 trucks, so it serves its purpose well enough that I don't feel the need to replace it and it hasn't broken (mostly because of my own improvements and treating it gently), but if I could go back and do it differently, I would. I'd skip the brand with all the fancy accessories and go with a more simple and solid product.