The only one for me is 505--No bad fumes--Sprays great--Lasts through several quilts--Worth every penny.
I buy it from Frabic.com and Connecting Threads. With fabric.com I usually buy 2 cans at a time when they have a discount of 15% off your total order. I just bought some and it came out to $11.03 a can. Worth every penny.
I did alot of research prior to buying this brand and it is hands down the best one out there.