Honestly, if I had not tried spray basting, I would not be quilting large quilts, only wall hangings. I hated pinning and ALWAYS had puckers on the back. I use a product from JoAnn's and catch it on sale as often as I can. I love it, I can easily get two large quilts per can and often more perhaps a baby quilt. I have never had problems with gumming up my needle or washing out of fabric. I have basted quilts and not gotten to the quilting until 1 or 2 months later and it still held perfectly.
I have not used 505 brand but give the process a try. It is an added cost but the easy of work and the end result I found to be terrific!