R.A.F Navigator Badges

[Futurnav]

Hey all

i was searching ebay for a Navigator badge, and i have come across two in the past. It may sound sad but im hoping to buy one which was used for a tornado navigator. the badges in the links below are the two im either going to go for, but can any one tell me which badge is msot commonly used on Tornado Navigators flying suits or are they both used.

many thanks Futurnav

thanks