Sorry for the delay in posting pics of my Diamondback SE cover and for the dirty truck!
We have had both rain and snow in the past couple of weeks (gotta love Indiana) and the bed was dry after both. However, i did notice water getting in after a car wash but it was a small amount and I do plan on installing tailgate seal at some point. I am convinced that the water protection on this cover is very good.
One downside for areas that are exposed to cold weather. It rained a few days ago and then turned cold. The cover froze to the bed and was difficult to open. I still would buy this cover again but it was kind of a pain.
I also confirmed with my wife that she paid $1,420/including tax for the cover. If you live in a state with no tax on online orders you should be able to get it for around $1,340 by calling in the order instead of purchasing online.
Overall I am very satisfied with the cover. I was looking for a unique cover that would make my Chevy stand out in a large sea of Chevy trucks that would also protect any items (mostly golf clubs) that I store in the back. I made the decision early that I didn't mind spending some money on a premium cover. I didn't want to put an inexpensive product on my $40,000 truck. It basically came down to this cover and the Retrax Pro. My research which included this very extensive post, many other like it, and a few local dealers led me to the Diamondback. My concerns over the Retrax Pro'shop waterproofing, road noise, and higher price eventually lead me to my decision. Although I do believe the Retrax Pro would have been nice as well. I did realize one thing in my two months of research: There is no perfect cover.