I've been looking at them too and I have been seriously considering the Bakflip VP - Looks like a traditional cover - still flips like the other bakflips and is lighter - it's also on the lower price point then the other bak flips...
Save up and get a Bakflip I have a G2 it's great I had the older type vinly type before yes they keep things dry when it rains it keeps things out of sight out of mind.
But the Vinly is so very easy to just take a knife and rip open if some one wats to know if your hiding anything that they would like to have.
I pick up my Bakflip for $629.00 no tax no shipping on E-Bay
The Backflip is more safe not saying you cant break in but it a lot harder theives look for the easy take not the ones that take more time to break into.
I have the undercover and really like it. It gives the truck new lines, without the large mound in the center like on the Lund. Personally prefer the electronic unlock. But the shape and low profile of the undercover, and ease of removing is why it won my pick.