We bought two sets of these. Every single chair arrived in pristine condition. and almost 3 weeks early! We have people of all weight sitting in them and all feel supported when sitting.  They are beyond sturdy.  AND INCREDIBLY COMFORTABLE. Im 54... Barely... The tallest of us here is 59. And shes 85. And can sit down comfortably without being nervous that she will fall or the chair will slip.  
I never ever buy cheap because I refuse to keep buying the same thing over and over. I doubt Ill be having to buy outside chairs for a very very long time!  Worth every penny!