for quilts twins or smaller- & home dec /clothing items i quilt on my 1956 singer...it has an absolutely beautiful straight even stitch- is really a dream machine- very easy to maintain- no fancy bells & whistles to deal with- and cost me $20! you do not have to spend hundreds of dollars to be able to quilt...you only have to practice with what you have. as long as your machine has a nice/even stitch it will do (it's part) your part is the practice.
i do also have a long arm for large projects- but even that is a very basic machine.