Le Mans 1000 exhaust

Hi all
I am looking to upgrade my exhausts on my 1991 le mans 1000. It currently has the Keihan exhausts but i want something with a more impressive sound and a little more open exhaust flow.
I was looking at the Zard system but i find it rather expensive although people say it is really good for sound and flow.
Also the Lafranconi Competizione system seems to get some good reviews.
Can anyone comment on these two systems and any other ones which are still available.
Any comments very much appreciated.

I have only experience of the Lafranconi comp ones, but I think they are fit and forget. You should not have any trouble, and they look and sound right.