I've had good luck with the Performance brand jerseys in 2X. Actually a little roomy which is nice. They seem to be good quality and are fairly simple.... a base color (red or blue) with black on the arms. I've seen several others with the same jerseys. When they have a sale a try to buy a couple to maintain my stock.

A friend of mine owns a bike shop in HI (South Maui Bicycles) and he sent me one of his shop jerseys manufactured by Canari (sp) in 2X and it is actually a little big. But I love it and the price was right!