Which diesel rig would you purchase?

I would highly advise you to make a trip to a large RV show in your area. You can look at all kinds of floorplans from all the manufacturers without high pressure salespeople trying to steer you in the direction that is best for them. Take a close look at fit and finish and think about storage etc. You can't beat being in the coach to get a feel for how it will accommodate your family. Then, after the show, test drive your short list.

Here, you will get a wide range of responses to your question and even responses to questions you didn't even ask.