Angie, just wanted to reply to say that you definitely won a convert when you first mentioned microcheck pants as being a great option. I own a couple pairs from Express' suiting trouser line, and in spite of the small pattern they've been very versatile. That being said, I'll probably keep a pair of black trousers around too because of the ability to pair them with my black blazer for a suit or to make colorful print blouses pop.
So far I haven't had any luck finding microcheck pants in casual fabrics that and flatter my shape and are within the range I'm willing to pay. I'm also hoping to find a good business-casual wool pair next fall since I've literally worn right through my last pair of wool trousers.