The plastic couplers made by San Juan Car Co. are excellent in appearance, and will mate with Clousers, and even Kadees. I have an easier time working with brass - just a personal preference!
HOWEVER, I wish San Juan Car Co. would make a GOOD PENNSY FREIGHT TRUCK in "O" scale - something we have been waiting MANY years for! There is so much demand out there for a good plastic Pennsy truck that the SJCC owners could retire on that one product alone! A. T. Kott