If you want to have real roll over protection, you know, something that is likely to hold up to more than a light trail lay over. Go welded and at least two/four frame tie ins and forget about convenience of removable parts.
Cages are not convenient, they take foot room, you crack your head on them, they get in the way of dash servicing, they really only service one purpose, keep you from getting mushed.

Rockhard makes good stuff, that I would never run in my own rigs.

SD