Lately I have been reaching for one particular brand of Land's End pants most often. These pants are mid-weight. I like the fit more than most any pant that I own and I own three different colors.
They are called "Men's Pleat Front Comfort Waist No Iron Chino Pants". They have 34 waist x 36 inch inseam and you can find them and many other nice 34x36 pants.