Just purchased a new 2012 X18D and my tow vehicle is a 2013 Ram 1500 Crew Cab. I know I could tow a much bigger trailer but we are perfectly happy with this setup and it will be EASY to tow. Can't wait to bring it home in the spring! The most popular first camping weekend here in Canada is the May 24 weekend so I will probably pick up the trailer the first week of May.
We have had a couple tent trailers since we had had our kids who are 13 and 14 years old. The past couple years we rented a X17D that I towed with a 2009 Toyota Tacoma with a V6. Having three beds in the 18D will make our 14 year old daughter happy because she won't have to sleep with her 13 year old smelly brother
Looking forward to receiving and sharing great advice!!