I have used several types of basting spray and prefer 505 -- less odor than others, and sticks better. There is a newer basting "web" on the market that is supposed to be very good too.
The most important thing when spray basting (for me, anyway) is to remember to spray only half at a time. I once sprayed the entire backing and then tried to position the batting on top, and that is just asking for disaster! Position two layers, then peel back the top layer so you are spraying only half at a time.