Brooke, start watching your local craigslist. Based on what you're doing, it sounds like a good treadle machine would work well for you. FWIW, I have quilts that my MIL quilted on her treadle. While they can't do fancy stitches they don't breakdown when a gremlin gets into "electronics" either.
Or, if you want electric, look for one of the older ones made in the pre-electronic age. They generally sell for far less than new ones in the stores. The components in a 30-40 year old machine are, IMHO, far better quality than the cheap plastic gears and such in today's machines.
If you consider buying used, take some fabric and thread with you. If the seller won't let you try the machine before buying, pass on it.
FWIW, I keep looking at a new one locally that sells for almost $400. Then, I remember that my sister bought a similar one awhile back. Her model is now discontinued. That means that in a few more years she won't be able to get support or repair parts, if needed. These new machines are now like computers. Buy the latest model and it'll be obsolete by the time you get it home and plugged in.
When I remember that, I keep on walking.
I know this doesn't answer your question about a specific machine. However, I do hope these thoughts are helpful.
We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.