I second Duluth trousers. I had difficulty finding pants that fit since I'm a little shorter but have bigger legs. Getting pants with larger legs means a larger waist and a belt only helps cinch that up so much. Gusseted crotch trousers fixed all that. I've worn both the ballroom jeans and their khaki pants and they're both worth it.

A bonus is, if you're into martial arts, being able to kick above the waist or 'roll' (Judo/BJJ), you can still do so in those pants.