You should add Railriders to your list, if you're going to try different brands. I'm sure you could return them easily.
I prefer the Patagonia Sol to Railriders, but I have used the Railriders–not the Weatherpant but the Versatac light. It's a really terrific pair of pants. There's no question that the Railriders will last FOREVER–which can be a disadvantage if you're ever trying to explain to your wife why you need a new pair of hiking pants. I used a pair on a trip or two and did not baby them, and when I sold them on this site I could not discern any sign of wear–not a bad performance.
I freely admit that I prefer the Patagonia b/c of looks.

