Tell me about the Canon MP-E 65mm f/2.8 1-5X Macro Lens ....

[Ireland]

I'm thinking of getting a macro lens and the Canon MP-E 65mm f/2.8 1-5X has been suggested by one of the lads in the local camera club

He doesn't have one, nor does anyone else in the club or anyone I know, so it's nit as if I can borrow one to try it.

Have any of you got one?

What's your opinion on it?

This is it ...

http://www.amazon.co.uk/Canon-MP-E-65mm-Macro-Came...