John, I'm in the same boat as you. I just tried color printing for the first time over the weekend. I'm using Ektar 100, Arista paper from Freestyle, a Beseler dichroic head enlarger, and tray processing with Arista RA-4 chemicals. My results so far aren't too bad. I still have some adjustments to make, but I'm reasonably happy with my results so far. I don't have any advice for you; just wanted to let you know you're not alone right now!