i bought 3 late model used in a row over 7 years before I purchased my current trailer .
In 2001 I ordered a factory built 21T Komfort .
It shipped 5 weeks later as a 2002 model year trailer .
I still have it .
It took me 7 years to learn enough of features , quality , and other nuances that were important to me .
In those 7 years I attended lots of RV shows every year and I also quizzed fellow campers as to their likes /dislikes of the TT they owned .
If you buy used you have the option of trading into what works best for you without a huge cost penalty .