You all make really excellent points! I hadn't been thinking about what dealerships were in the area - that rules anything from Juki out, since I'd have to drive a few hours minimum. Unfortunately, the area is saturated with Bernina dealers, which are way out of my price-range.
Fortunately, I contacted a business about an hour away that sells Janome and they happened to have a perfect condition trade-in 6600 they were willing to sell for $1000 (normally $1599 there). They're closed tomorrow and Monday, so hopefully I can get out of work early on Tuesday to go and have a peek. It's more than I wanted to spend, but I know that a machine like that would be a very good investment from talking to several friends (and reading this forum). Especially for that price!