I was going to use PPG newer clears like DC3000, but was advised against that and told to use DCU2002. The owner of Southern Polyurethanes Barry told me that PPG DCU2002 was most like the clear he sells that is so popular. I would have used Barry's clear but I wanted to stick with PPG products. The DCU2002 goes on like glass if the gun is set properly and the air pressure is sufficient. It needs to be cut & buffed within the first couple of weeks of application or it gets as hard as concrete. It is not a production clear as most of PPG's are. Get the spec sheets on PPG clears and read them, most are designed for production shops or to be used in a forced heat drying booth. I cannot say enough good things about 2002, I am by no means a pro painter but I achieved excellent results with it and highly recommend it.
PS It has been my experience that the counter people at the paint jobber will steer you to the wrong product that you need, and actually know very little about their products.