Steve, if you're not in a rush and keep an eye out for sales, rebates, etc., you might find a 4800 for close to the same price as a 3800. This was the case a few months ago. For what it's worth, I print in color and B&W up to 17X22 with the 3800, and couldn't be more pleased with the IQ. The only reason I'd upgrade would be to go to a wider format.
Peter J