I did a bunch of juice-tasting before delving into DIY. It was helpful in identifying things I did and did not like, even though I have far more control over the ingredients. If there's a B&M near you that does juice testing, that's a great idea. Keep in mind however, that different flavors may differ quite widely in terms of vendor-to-vendor tastes. If you have a juice company that you like, you could see if they offer an assortment of small, taster candy-flavor e-juices. Best of luck,
Anna