It may seem funny to some, but my favorite style of dress pants comes from Kmart. They are by Jaclyn Smith and are made of 90% nylon, and 10% spandex. They have an elasticized pull-on type waist, and excellent lines. I am short--5'2", and I am always looking for something to make me look a little taller. (Which translates into a little slimmer.) These pants certainly do the trick. I do have to wear taller shoes with them, as they are a little long, but they make my legs look slim. (I'm sold.)
I love the slinky material, and often match them up with other slinky brands such as Chicos, Carole Little, Slinky, Travelers, etc. The greatest thing about this material is that it doesn't wrinkle! This makes it a perfect material for traveling, and packing in a suitcase. You can even roll them up, and then take them out of your suitcase upon arrival, and hang them. They will look as good as new, and you never, never need to iron. Yay!
The pants are very reasonably priced, and are sometimes on sale. They wash like a dream, and you almost can't wear them out. So I ask you...what's not to like?