I waited until the next big quilt show to get my 6600P, and I also bought a Gem at the same time, getting an even better deal. Because it was a show special, I got several hundred dollars off and was able to get a bundle package of thread, 1/4" walking foot, and the machine traveling luggage. I had to wait a couple weeks for the 6600P to arrive at my local shop, but I was able to take the Gem home right then and play with it first.
Someday when I can get a longarm, I'll do the same by taking advantage of a show special. If you do this also, I recommend making sure that your service contract is with a nearby shop rather than one a half-state away.