I think when it comes to strut bars, the more complicated a design gets, the less usefull it becomes. I'd personally never buy any strut bar that was made of more than 2/3 pieces put together. No matter how you look at it, they lose rigidity when cornering hard. If I were to get one, I'd look into something like this:
...or this one:
As flimsy as it looks, this Neuspeed FUSB was the best one I've ever owned for any of my cars, made of just one piece. Again, keeping it simple works the best..it's just too bad Neuspeed doesn't have one for our Fits.