We love the look and heft of these barstools (we have 10 of them!) - they are REALLY solid and comfortable.  The back can shift around a bit if you don't have them REALLY tightened down but we like having the option of using the back and leaving others backless.  The only negative we have found is the material snags your clothes really easily!  This is problematic and we haven't figured out how to fix it since you can't sand it down.  If you're wearing jeans and a sweatshirt it's fine but if you are wearing a sweater or silky material it is not good!  Keep this in mind when purchasing but overall we really like them.