Unless your house is in the upper third of your real estate market, I would go ahead with the laminate. I have seen problems with warping but they were extreme situations. One was a pipe leaking under the kitchen sink for a little over a week before anyone noticed, another time someone put a screw through the hot water pipe in an upstairs shower and the hot water leaked through the midfloor for a 3 day weekend, the midfloor also collapsed into the dining room, but the hot water did get the laminate floor to warp. In both cases the builder just removed a portion of the floor instead of the whole thing, much cheaper than refinishing the same floor. Did another house where the same thing happened to real hardwood, 4000 bucks to fix it, as opposed to 300 on the more expensive of the 2 laminate fixes, you do the math, after all its your coin.
