Well, in terms of a review:

The Neutrogena helioplex came highly recommended by a friend who used it on a sunny day watching a kid;s lacrosse game. Conveniently, it comes in liquid, spray and a little stick, which fits great in a bike bag.

The stick feels a little sticky going on. The liquid feels definitely thick, but it is clear pretty quickly. We haven't had enough sunny days for me to test out the spray.

This stuff is a bit expensive. (In the $10 - 20 range.) But I have already had one "suspicious" thing hacked off my leg by "the butcher" - my term of endearment for my dermatologist riding buddy, so I don't skimp on the skin.

I have not tested this much as I have only had maybe 1 ride where I was out of leg/arm warmers. But so far no burn at all. It seems to last though a long ride - I never remember to reapply though I hope having the little stick will help. I cannot comment on the "residue" that Knot referred to because I simply didn't notice any and my bike clothers are light colored. I was very impressed by the tenacity of the stuff through sweat, though.

I will update the review after some more time on bike and some pool time.