I bought my Brother CS6000i from Walmarts and I really like it. The only thing that's not the best about it is that the harp gives you very little room to quilt any large pieces. Otherwise, it's got everything you need...needle down, darning foot, walking foot, quilting stitches, decorative stitches etc. It's very light, and comes with a carrying cover...making it easy to take with you to classes, bees etc. I bought mine online and picked it up at the store for no shipping cost just like "kateyb" said in her earlier post.
Also , doesn't Walmart now have layaway? If that model is too expensive, you could try layaway? Good luck with whatever you choose.