Which size RV to tow Jeep Wrangler on trailer?

I am just learning about this configuration and am seriously considering it as well. I may go the gooseneck trailer route. Thank you for the suggestions, I'll let you know what I decide. I have rented a little guy to pull got next month to try that out, but really wanting a tiolet. The camper for the gooseneck looks comfortable. More room then a little guy. I'm also going to check my jeeps owners manual tonight after work. Thanks for all the comments