I prefer to buy from a dealer, but that sure is a big jump! Did you do any negotiating? There are definite benefits from buying at a dealers.
Also, and this may sound odd, but make sure your dealer isn't going to retire anytime soon. I was careful to go with a local dealer (and paid more) and then he retired.
I have a Singer, made by Janome (6500) and love it. I can't imagine having trouble with how fast it can sew.
I would try the Janome out and see what feeling you get from the people as well as the machine. See how clean the bobbin area is. If there is an extension table with it. If you feel comfortable with the sellers. And, make an offer.
I wouldn't buy sight unseen.
Watson
Watson