It looks like there are several options out there. I have seen the DeVilbiss Finishline ads, and know the Sata brand is a good brand. I didn't know they offered a polyester model. Will the Summit or Harbor Freight do an adequate job of spraying the polyester? I know the Sata with 2.5 should do well, but probably will be the most expensive. I think the DeVilbiss runs around $175, but only has a 2.0 tip.