Which type of NON-silicone for caulking after installing window?

After a fair amount of fumbling around on the web and the forum archives, I think I am going to go with Lexel. I just talked to one of their techs, read the product brochure carefully, did some checking of the reviews, google blah blah blah etc., and it looks promising. It dries clear (not very important to me), it remains flexible (good), it is UV resistant (very good), and it does not peel off (really good, if it is true).

I will report back in a few days, maybe in a new thread.