I was using earmolds with a plantronics headset. The plantronics is fine, but after being around round engines and airplanes in general for so long, I don't hear well from just one ear. I need to be hearing with both, or it's no good. I switched to a Telex (750, I think...if that's the one with both ears) for that very reason.
I had a custom earmold done with a local hearing aid company. Any one should be able to do it for you without any problem...even get your custom choice of colors.
I thought the thing in my ear was also very annoying. At least a rubber plug such as comes in a kit for plantronics or any in-ear headset, was more comfortable.
A custom earplug at a local hearing aid supply or audiologist will run about fifty bucks.