My current vice, I think its a Warco one, but looks like this

Its about 80mm wide jaw but only opens to 63mm which I am finding is not enough.
I think a 6" vice may be too big?? so am looking for a 5" one, however there don't seem to be many around. For info the table size of my mill is 630 x 150mm, here is a photo with my existing vice on it

Apart from the lack of jaw opening I am happy with the vice and like the fact it can be swivelled and has a proper handle. Soba do a 5" version but no one seems to sell one 
Budget is around £150
So, would 6" be too big and what about 5" ones, any advice
Edited By petro1head on 20/01/2017 19:01:59