Roll Cage Design Preferences - Features / Benefits / Advantages / Disadvantages

[DETON8R]

Question for anybody who fabricates or installs cages - What is your preference for a cage design? And WHY???

I'm custom bending a roll cage for my 1969 Camaro. I started with a pre-bent weld in 10-point cage kit that a purchased from someone else who chose not to use it. The fit of the cage was good for a standard '69 Camaro, however I'm doing some interior mods, a dash swap and setting the B-pillar hoop back a bit further than it would normally be placed in the car according to the instructions, so I had to decide to either make some custom modification to fit the car, or go another route. I kinda did both....

What I found was the pre-bent kit bar elements there were some pretty sizable gaps between body parts of the car and the bars within the cab from the pre-bent kit. I wanted a tight fitting cage (tight enough to make the guy putting in the head liner really mad) and the most head room and clearance between me and the cage that I could possibly have inside the car. I used the B-pillar hoop, massaged it a bit for my build, and then went custom for the rest.

In my research on the subject, I found this image in the NASA Rally Sport Rule Book.
http://www.nasarallysport.com/rules-...Appendix-B.pdf

I chose to bend a roof hoop, shown as a "Halo Hoop" and ditch the two door opening bar configuration shown as the 253-3 configuration, as I just couldn't massage the door openings to make it work the way I wanted it to.

The advantage I see is that the two most complex bends are done as a single members, then the other bars are bent on fairly simple straight runs.

What are the factors to consider when choosing a design-style for a cage?