The Brother CS6000i is a machine that's been around a long time and has been useful to many QB members. You can read reviews of it on Amazon:
https://www.amazon.com/Brother-Quilt...dp/B000JQM1DE/
I don't know if it's still sold at Walmart, but it used to be. With both Amazon and Walmart, you can try out the machine and easily return it if you don't like it. Most dealerships will not take back a machine on a return, although they will do a trade-in. If you decide on Amazon, just be sure the machine is both "ships by and sold by Amazon" as that makes returns very easy. If it is sold by someone else, returns are more complicated.