Environmental Working Group's 2011 Sunscreen Guide is out! Be sure to visit the website for a list of sunscreens to avoid and those that are a safer alternative.
I have purchased UV Natural in the past and did not like using it. It can be a little stubborn to apply, and once on, leaves a caked-on, greasy feel along with a white residue. If you don't mind those annoyances, it does do the job. I just purchased the brand Heiko SPF 30 for 29.99 CAD, and will let you know how it works as soon as I apply it.
UPDATE: Tried Heiko and returned it. Was difficult to evenly apply, and left a white residue. I was hoping it would be easier to apply - stuff is expensive and you end up using a lot in one application.