Hi Graham,
Thanks for the advice, Ive since bought the Hyperion 8 and 13mm's, and really like them, nice FOV, good eye relief, and the camera thread is an added bonus. (besides, managed to get them for $115 each...the beauty of e-bay...

)
Still havent decided on the third one though, but thanks for the tip, ill go searching through the buy and sell and see what i can find.
Thanks again
Davin