A good RV dealer is like a good car dealer.... It needs to be a good experience from start to finish. I purchased a tt years ago and the saleswomen was great but the finance person was very rude and unfriendly. Got outside and the PDI guy was perfect.... I've bought 3 campers over the last 10 years, the second one was good from beginning to end.
I bought my first two tt's from the same lady, same dealer( 2 in two years ) walked in one day and found her and said I'm ready to look at fifth wheels, finally got me a dually which was right out front. She looked at me and no lie said I only sell motorhomes now you'll have to find another salesman. I walked thru a couple finally talked to someone but bought elsewhere.
A good salesmen will see to it that your taken care of from the beginning to the end.