Subframe Connector dilemma

To me looking at all of the above cudaman51 and BigSlim has the right idea. Those would have to be stronger than the others by far. The ones cut to the contour of the floor pans look awfully weak to me.

What about ride quality instead of torquing of the body? Do they make the car ride or handle better?

I've seen several postings from owners who have had connectors of various origins installed and all of them were positive, including making the car seem quieter in addition to a tighter handling characteristics.
The US Car & Tool ones I have are a compromise between weight and strength; they're light but still thick enough to provide stability through strength. They'll be welded throughout their length to the entire middle section underside of the floor pan and the ends of the existing front and rear sections.
I'm looking forward to having them installed. I'll keep you posted on the results.