If you can find them (they're running out of stock) Speedo makes a padded triathlon race short that does not have a middle seam, it's more like 2 seams making a V-shape so there's just stretchy stuff in the crotch area instead of a seam down the middle. Very comfortable...I wish more cycling shorts took that approach!
They're lower rise than other cycling shorts though, if that's an issue, and the padding is there but not as bulky as non-tri shorts. Works ok for the type of riding I do.