I've had so many folks asking about my rack on this thread, I've given up on answering individual questions.
I didn't want to clog up the forum with the details, but this is the only way to answer everyone:
-My rack was part of a extensive build 3 years ago with Fat Fabrications. I currently have no way to individualize it's cost.
-Yes, I would do it again.
-I don't notice any instability in turns, I don't feel top heavy (see construction notes below)
-It whistles slightly in a heavy cross wind, other wise no noise.
-Adds about 400 or so lbs (with the front bumper) to the rig.
-I can still roll up the sides, rear and cab top.
My apologies to those who's pictures I have plagiarized here, but I use them to make a point:
I just visited with one of our members who had a rack built very similar as described in the last post.
The bids on his rack varied by more than four fold (for the very same plans). He got a great deal by visiting some cage fabricator forums and contacting a few local shops.

Prices vary widely depending on what you want. Material (diameter/wall thickness), complexity of bends, paint or powder coat, expanded metal deck or wire mesh, front bumper included or not, underneath front foot guards, gas tank guards, etc...

Mine was attached utilizing existing mounting points only (rub rail rivit nuts, bumperette bolts and antenna mount on front roll bar), no new holes. The front upright supports and bumper are designed to hold the folded windshield, yet not extend out the sides.

The bumper is integral (minimal joints) to the top for strength. The rear ladder is curved around the back corners to match the rear bumper and use it as the first step.

No matter how the Pinz twists on rocks or bumps, the cage is solid and doesn't move or shake. Though the diameter of all pipe is the same, it has thicker walled pipe on the lower structural cargo/ protective portion, but thinner up top to keep the C.G. low. The side ladder is tapered for aesthetics and minimizing upper mass. I have had 4 teenage boys riding up there with camping cargo- no sags. Holds a tent nicely.
When I planed mine, I searched the web for pictures/videos of every cage I could find.

I then contacted some of the owners to ask what they did and didn't like. I even had one retired but quite experienced NASCAR roll cage fabricator offer to do mine for material costs only, since he liked the truck! Such deals are out there, you just have to look.
I went with Fat Fab since there were other things I wanted done on the truck, and Andre was close to my truck's location, had done many of these builds before, and came
highlyrecommended. He gave me solid suggestions on the practicality of the rack.
I would reccomend you contact Andre Swanson on this forum (FatFabrications.com) to get a bid for your requirements. He can also give you some ideas of do's and don'ts of a cage.
Hope this answers the questions.
Ed