Agreed.
I started using RazooPress (aka ArtsNow) in January. Their products are very much trial and error. The watches--excellent products. Anything with fabric? Not so much. (Actually, it's terrible.)
Their shipment fulfillment thus far has been 100% and for that I am very pleased. They get the stuff out right away, and if you have a reseller account, the prices are low, the shipping free. (I sell most of my stuff wholesale to other stores...)
I have not yet found any other POD suppliers other than--don't laugh--Costco. They are still a bit pricey to me as a wholesaler, but it's the best I can do for now since I have little capital to invest.