Good question. I have a Columbus 320RS and for the money, you can't beat it. It has a lot of standard features that really appealed to me. 100" wide, welded 6 sided aluminum frame, microwave/convection oven AND a gas oven just to mention a few. I looked at their 365RL, but it's a little too much for my RAM 2500. I suggest checking out the Columbus Facebook page.about 200 people on there who can offer their opinion.
https://www.facebook.com/groups/379970242092901/I also checked out the Open Range, but didn't like the interior colors. It didn't seem up to the level the Columbus is.
As for the Cardinal, a very good rig, but you're going to need a 1 Ton for that one, too. There is a Forest River Owner's Forum that might help you:
http://www.forestriverforums.com/forums/