Everyone can't afford the best so sometimes next best is good enough. If I were making something to enter a show or contest or auction I would buy the best.
My quilts are sewn with walmart & Joanns and sometimes I buy the really wide fabric for the backs at the quilt shop.
My moms quilts were made from used clothes and they lasted a loooong time(untill her later yrs when she could afford better).
Long story short buy what you can/want to afford, just keep quilting and sharing.......