Here is my delima. My wife has an 08 Odyssey with factory roof rails and no hitch. We plan to keep it for another 3 years or so. I cannot decide if I am better off getting a hitch and a platform bike rack (probably a 4 bike) or a roof set up with 2 racks. The pros of the hitch route... ease of loading... I can use it on another vehicle...wont cut into MPG to bad. The bad if the next vehicle may need a hitch (more expense) and having to remove a bike or two to get into the rear of the van.
The roof pros...out of the way...I can remove the crossbars and bike rack and transfer to another vehicle with rails (more then likely)...allows me to add a cargo box or something if wanted to.
Cons...cost going to cost $600 or so...loading...reduced MPG.
Odds are when we get a different vehicle it will be a Pilot or 4 runner so it will probably have a hitch and or roof rails.
Am I missing anything?