If your machine has a 1/4" foot it's worth buying.
My Jenomes have a metal ridge on the right side of the foot which makes keeping sewing at 1/4" easy.
I have a 1/4" Bernina foot (no ridge) so I pay strict attention to the fabric lining up exactly with the foot's right edge.
I mainly use Bottom Line to quilt, unless I want the quilting to show then I use Superior Threads verigated thread, or Masterpiece cotton when I want the look of one color
http://superiorthreads.com