I have never used any spray basting product other than 505 and love it. I use it very sparingly and it holds just fine so I seem to have a can last a long time. I buy the larger cans at an exorbitant price which is why I am frugal with it. No problems repositioning and the stick lasts a long time. I once spray basted a quilt but had only quilted a small portion before needing to store the quilt away for months. When it came out of storage, it was still sticking together and I went on to finish it with no problems or puckers.
I tried the Elmer's glue in a roller bottle once and struggled with spreading the glue. Thanks for the hot water tips, jennr8r.