I have a Juki TL2010Q which I got back in May from Sewing Machine Plus. It's a great straight stitch only machine with 9" of throat space and comes with a few different feet and accessories. I also have the Grace Q-Zone Quilt Frame that I purchased from Leah Day. Over the course of the summer I have quilted a couple of different quilting projects both with the Juki on and off my frame and the machine works great. It is also really low maintenance. All you have to do is clean and oil it.
Good Luck with your sewing machine search.
Happy Quilting.Hugs Katie