We bought a new 2015 Seneca, and really do enjoy it. Not to say we haven't experienced the usual "bugs" that come with a new unit. I cannot say enough about the Cummings engine. Plenty of pulling power, with pretty good fuel milage. The Seneca drives, and handles like my full size pickup. My wife drove it most of the the way from Southfork Co. back to Oklahoma. Don't be afraid of the microwave-oven, it works great!
My advice to you is find a unit you like, then spend the entire day going completely through the camper. Check everything from the front bumper to the rear tail lights. I will list some of the issues we have experienced with ours.
The head lights were out of adjustment. (Shining 4feet in front of hood
Make sure all doors close properly. Includes side door!
Check outside tv to see if their is proper insulation behind the tv.
Make sure you understand how all, and I mean all the tvs, and radios work! How they work with satellite, cable, and air antenna.
Don't let the excitement of buying a new rv, blind you from cutting corners when trying out the rv. Spend the day trying out different models of the Seneca. Find the one that fits your family the best. Try out the seating verses where the tv is located. Do you have to bend your neck to watch tv? Does the bathroom fit YOU?
After buying the Seneca, I would recommend this coach to anyone. Their are so many stiles to choose from. I forgot to mention, we also pull a jeep, and we cannot even feel the jeep behind the Seneca.
Hope this helps with your new purchase!