I don't think you will notice much of a difference between the bars you listed. Surely the x-brace is a better design, but the bars all mount the same way to the car. I don't think any more or any less rigidity is going to be transferred through the bolts holding the bar to the car. All of the bars have been proven in a roll over.
If you want to make a difference in chassis rigidity get door bars with whatever bar you get. This will have the biggest impact hands down. It reinforces the chassis biggest weak point, the lack of a solid top.
One step further would be a custom welded in roll bar, half cage, or full cage.