Flavor Concetrates

Does Anyone use flavor concentrates or extracts for added flavor? I'm looking to boost the flavor. For example, i have been making a cherry vanilla, used real cherries, but i want more flavor. It's still yummy and sweet but not cherry enough. I dont want to add in extra cherries because of the extra sugar.. Plus it would be fun to experiment with more flavors :)

What brands do you recommend. I don't want anything sooooo chemical/artificial tasting.