JCrew fits my body nearly perfectly, which looks GREAT, but having worn oversized shit my entire life, I miss the ability to dance and jumping jacks comfortably in my button up shirts.
What kind of dress pants you thinking of?
I'm VERY low key on pants (I refuse to pay over ~$50 for pants - they're just pants?), and have been pretty happy with Gap "dress" cotton and wool-blend pants. They're pretty light material, slim-ish and have good structure.
I use to shop H&M and their stuff did fit, but I've been noticing the shoddy quality more lately, and some of it's way too fashion forward for me. Speaking of, Gap has been sucking for over a year on the tops: shirts are uncomfortable (material), cut for fatties, and the designs are just "off".
If its too tight in the chest or too loose in the abs area it's not a good fit. Trust me, you're better off dressing well in a style you don't really like than a style you like that fits poorly.
I'm looking for black dress pants, flat front, no cuffs, no pattern. Material can be cotton, polyester, or a blend as long as it's machine wash. I got lucky and found a line of dress Dockers that are no longer being produced. When the 6 pairs i bought wear out I'll be in trouble.
The next closest I can find is the Express Producer pant, but the material is too stiff.