I have to agree, go for the quality. I see a lot of problems with laminate floors, and like everything else, there is quite a difference in various qualities of laminates. Buckling is generally caused by improper installation(not enough space for expansion, unleveled sub-floor, etc.); but I see de-lamination much more often. Curling and splitting at the seams. Spills, pet accidents, or just mopping the floor with too much water. Anybody with kids, pets, etc. just can't be there 24-7 to wipe up the spills immediately, and you can only damp mop them.
Much better to invest in a floor system that is going to last, rather than replacing the laminate a couple times at least in the same time span.
Real hardwood will buckle, also. However, I also prefer the real thing. How many of you remember many years ago ago that, when doing the cost approach for an FHA loan there was an INCREASE in value for wall to wall carpet....even if it was over hardwood? And, carpet had to have an FHA rating and approval. Hardwood was the standard no matter what the quality of the home.