I'm a chino guy, wear them often and have tried plenty given that I have been in a business casual environment for over 12+ years. I understand wanting to purchase on a budget and I'm all about that as much as I am into the higher end stuff, but after trying so many different brands and variations, I just can't get behind too many of the brands mentioned in this thread.
When I can get Mabitex or Incotex at Daffy's on the cheap for $30-$50ish or from the B&S for $75 max, I just don't see why I would spend that money on cheap materials with lousy fits. If you are able and willing to step up to a slightly higher price bracket, I would highly recommend forum affiliate Epaulet slim chinos, they're locally manufactured, materials are boss, and they have a great slim fit. If the price is too high, consider Mabitex and Incotex and browse the MC B&S.