Murcielago - Tyres + Benefits of later 8 pot calipers

[100 IAN]

How much better are the later 8 pot calipers?

Upgrading an early car to the later set-up isn't cheap as later design alloys are also needed i believe(?)

What do people think, is it worth the expense and what 'value' would it add to the car?

Also what tyres do people use, which are the best and which are the ones to avoid?

I'm still considering a Murcielago and have looked at a few, but if anyone knows of one that is available but not advertised please PM me.

Thanks