We just bought a new Mountaineer 345DBQ two weeks ago! We spent a week in it and loved it! We have only had a camper for 6 months. We traded in a Damon Hornet 5ver.
For your question I would go with the B&W! I have the Reese 15K pro series now. It has worked well for us so far in the limited times we have used it but I totally dislike the rails in the bottom of the bed.
My truck is old so the pro series was a universal fit which means it does not fit anything well I think
If I keep my truck I will look into seing if I could get a B&W that would work.