What is the BEST hairspray to use for all day volume?

I have tried almost every hairspray. tresemme, pantiene, big y hair, regis, godwell, herbal essence, felix, bed head, aussie. I have very thin hair and withing a few minutes its just flat all over again :( not even hairspray, maybe moose that has worked for any of you! Anything would help! I dont mind the price either!!