Im looking at bed toppers for my '01 Quad Cab. Anyone have any personal experience or advice with different brands or styles?

Im looking at Snug Top cause I like the rear window without the window frames. Im alsow liking the idea of the side windoors so you can open them and access stuff deeper in the bed.

Another thing i am curious about is if it is possible to install a lumber/roof rack that mounts inbetween the bed and the topper with a rack that goes around and sits above the topper. Anybody done or seen this before?

Thanks for any help, reviews or advice.