Thanks for all the replies, especially the ones in favour of the Bismarck.
It certainly seems to be a fine razor and after reading your thoughts and the reviews on it I have just placed an order for two, one black and one red so that I can have a bit of a rotation between them, not to mention I have a case that will hold two razors quite nicely and it would be a shame to leave it looking empty.
I am indeed from the UK, seems I have been a little remiss in completing my profile on here.
The classifieds on here look great; I managed to find a reasonable deal on the two Bismarcks and I'm actively considering spending the remainder of my budget on something nice from the items listed.
The other razor that has tickled my fancy is an 11/16 Revisor Gold that I have seen listed here:
Revisor Gold Straight Razor, Solingen
Does anyone happen to know of anywhere else that one can obtain a new Revisor? I read several of the reviews here on the forum about them and they seem to be quite the razor.