I can't get over how comfortable these chairs are to sit in.  Took a little to get them assembled, don't tighten the screws more than a couple of threads until you have them all (5) started when you attach the seat to the back.  Comes with everything you need to build them, screws, washers, and wrench.  Has protective pieces on the legs for your hardwood floors, so no worry there of scratches.

Pros: Comfortable and built with quality.
Cons: None that I have found.