It's all personnal preference. I personally see nothing wrong with the standard door mounted types, but some people say it's too much weight for the door. Mines been on 30 years and still has the original back door. Others go for the Mantec swing arm, that opens with the door, but puts less weight on the door. However, someone on here I think put up a horror story of how theirs went wrong. It depends also on size of tyre, if your putting huge tyres on, you will need a heavy duty carrier that removes maximum amount of weight from the door and onto the chassis.