I never found another basting spray that worked as well as 505. However, there is a new basting web out there by Mettler that may be better -- especially in terms of controlling overspray. Here is some info about it:
http://www.quiltingboard.com/main-f1...e-t229396.html
To stock up on 505, I used this website:
http://www.sewforless.com/item/505_T...OUND_ONLY/7391
As I recall, the larger can also comes in red -- same stuff, but made in France and cheaper -- and the red can is what I purchased. This current price for the large yellow can seems a couple of dollars more than what I paid a couple of years ago.
I haven't done glue basting, so can't compare it to spray basting.