I use a 1.0 tip Sata Minijet for most of my painting these days. It works fine for base coats and (thinnish) 2.1 VOC clears, which are the standard in my neck of the woods (you can't buy the thicker stuff.) The tip is a little small for thicker paints but I get by.
A quick check on ebay shows you can get a new W-300 from Japan for about $200. That's a deal in my view for a brand new gun of that quality. I'm tempted...