I am looking for a tow vehicle for my 18 ft X189FBR. I have read the previous threads but am wondering about a pickup with cab vs a heavy duty SUV.I believe this trailer weighs about 3500 when I have it loaded with gear...not water.I would like to set up base camp and take the tow vehicle into the mountains so I want clearance and probably 4WD. I would like to be able to throw an air mattress in the back and stay overnight if I want so I want the space to be enclosed. I don't care about carrying passengers, in fact the more empty space in back the better. However I don't really want to have a giant vehicle since I am a small woman. Any thoughts on an SUV vs a truck with cab? Most cargo vans I have seen do not have very good clearance so that's out.