I bought a floor model that came with a full factory warranty. That saved me 1/2 the cost of buying new! There is absolutely nothing wrong with the machine and it's like a car dealer's demo...if there were any "bugs," they've been corrected. The accessories were still packed from the factory and the original box with warranty came with it. Plus they cleaned the machine and made any needed adjustments before I brought it home. This may not be the route you'd like to go. For me, it gave me a way better machine than I would have been able to buy otherwise. There are lots of brands...find the one you like the most and a dealer you can live with...and enjoy the process.
Edited to add: I have the Pfaff Performance 5.0. Love it! There are videos on YouTube about it.