I am sure it has been discussed here plenty. I tried the search button, but couldn't find relevant threads.
On a subject of roll-bars, I would hate to see a slow motion video of what happens to your head if you get a tug from behind. We are talking low back seats, not race seats. They look the best, but it seems like your head will have a hell of a whip lash before hitting a solid metal bar.
Anyone seen a tasteful way to add a little extra safety to the seat / roll-bar setup?