custom molded earpiece for CEP  

Got the Westone from the Carolina outfit.   Great for improved audio (can turn volume way down), mine lasted about 7 fire seasons then wires and molds started to come apart, also the little goldplated connector is a bit fiddly and tends to get the little pinch thingy bent which can cause intermitttend audio.

Don't know about the ones from the NE outfit with the 3.5mm plug but I would imagine that connector lasts longer