My JoAnn's "supersized" a couple of years ago and I hate it now!! The service is terrible both at the cutting tables and the checkout -- you stand in line at both places until you feel faint! They must not pay their employees very much as you rarely see the same people twice. If you ask for a specific item, they either send you on a wild goose chase or tell me they don't carry that item.
On the plus side, the store is huge and has lots of quilting fabric (even if I can't afford it), the store is clean and what employees they do have are mostly pleasant.
However, I now find most of my sewing needs either at my local quilt shop, WalMart or online.