I ordered my TT new. Several reasons. The first is that getting what you want in a floor plan is almost impossible when buying used. That goes for options too!
If you find what you want in a used RV, great! But, be prepared to make lots of compromises. And these compromises lead to wanting to upgrade later. Which, for some, is very doable and not a financial constraint. For others, it is just too costly.
Third, if you have not been in the newer models, it is amazing the the upgrades\changes that have been made in just the last 5 years. Even looking at what is new for 2016 over 2015 is considerable.
Having a new RV warranty can be a saving grace for those less mechanically or electrically inclined. I suggest used units for those with more RV experience and understand more about common problems and how to fix them oneself.
Not all sellers are honest. You may just be buying someone else's water leak and structural damage. I strongly suggest taking a used RV down for a leak test before committing, at a minimum. If the seller will not agree to this, move on. Electrical gremlins can also be challenging to sort out, even for a dealer, and since they can be intermittent, you may not know until after your first outing.
Well, you get the idea. Lots to consider and it all depends on your needs and capabilities. Experience makes a big difference and I would not suggest a used unit except to a seasoned owner who can do ones own work.
2016 Jayco Eagle 330RSTS = "Madame Maxime
Maxxis M8008 E rated Tires and 16" Wheel Upgrade
Dual A/C 15K BTU, 14K Equalizer WD hitch with SC
King Bed with Java Interior, (2X) Yamaha EF2000isV2
2012 Ram 4500, 6.7L Cummins Turbo Diesel, MegaCab = "Hagrid
8'x12' BMCM Stake Bed, Cabin Chassis, 2WD
360 degree Virtual Tour