I also think spray baste is the greatest stuff!! I do only use 505, as it is doesn't gum up my needle, and when I was researching spray baste it had the best reviews. Here is the link where I buy it, the price is the best I have found, as these are the large cans, and you can buy 1 can or by the case:
http://www.sewforless.com/item/505_T...OUND_ONLY/7391
regards,
Kif