To follow up... I installed the SyneticUSA bedcover on Friday.
The Pros:
- Construction is solid. The cover seems really well built and sturdy. The sliding mechanism works very well so far.
- I like that they include drains with hoses so that any water that might make it into the track is funneled out via drain hoses (hoses can also be a con as well)
- Assembly was easy and only took about 30 minutes to bolt together.
- They include spare parts so that if a part ever gets damaged it can be replaced.
The Cons:
- There are NO instructions for installation with a Ram Box. The instructions only covered installation onto a standard bed, so it took a lot of trial and error to figure out how it should be mounted.
- Since the cover can't sit on top of the bed rails, they use a large piece of rubber weather-stripping that clips on the side of the rails to bridge the gap between the cover and the bed sides. There are a couple of spots where you can just slightly see daylight and after a hard rain I noticed a little bit of weeping around those areas.
- The drain hoses do stick out a bit where they enter through the holes in the bed towards the bottom, so if you were to load up something big like 3-4 sheets of plywood you'd have to be mindful not to snag the hoses.
- There is about an 1/8" gap between the top of the cover and the tailgate which they fill with a small rubber flap. It seems to keep the water out for the most part, but I can imagine that a pressure washer might be able to push water past it.
All in all, for ~$800 it wasn't a terrible deal. I can say that this cover probably works very well on a standard bed where it can sit on top of the bed rails and I think with some tweaking, I can stop any leaks that this one has.