Where to find heavy wool pants that I can wear to the office?

I'm looking for good-quality black and dark gray winter wool dress pants that I can wear to my office. I have a better mental image than a verbal description, but pants that will look professional, won't look odd with a white shirt and tie, yet can also be worn with a turtleneck or something casual after work or weekends. The feel is important or, perhaps better put, the heft. I'd like these to feel good to wear, not insubstantial. Mainly cool/cold-weather use.

I've checked L.L. Bean, Brooks Brothers and a few other outlets, but the wool pants are either medium-weight dress pants or trudging through the Yukon pants.

Any help would be appreciated.