Honestly, I would just find something off sell and trade to see whats cheap and still has a lot of life. Most brands are decently waterproof now, and a lot of the bigger brands have vents. Find what fits your style. I found over 6 or 7 pairs on sell and trade in like 2 days and I'm size medium which are a little tougher to find that Large or XL. Im sure whatever brand it is you'll be find. If you wanna go all out, I know Armada and Oakely have really sick and functional pants along with Orage (you would want Belmont pants).