Thank God I came back in time for the annual "jock strap" thread!
I have had great comfort, as well as protection from a good one-hopper that got up in there, from the combo of Smitty full-length gray tights/Shock Doctor Power Carbon Flex cup.
The Smitty tights feature strong stitching, a comfortable fit, and a long, easy access cup pocket that stays absolutely put. The Shock Doctor Carbon cup is very strong, but I would really like the Titan Alloy Flex model.