If you are on a limited budget, you'll appreciate these J.w.brine Chinos. It's a popular choice and a good investment. In this price range, you can also look at these Paul Smith Chinos. It's also a popular item and won't break the bank. You might also want to consider these Chinos. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
For something in the middle of the price range, why not look at these Valentino Casual Pants. While the price is very reasonable, this item is an easy wardrobe update.