If you were going to use the gauge on a table saw, then all the ones tested would be successful, but as you are going to use it on a small router table, you would be wasting your money if you bought anything but the Incra V27.
At £65 with a 50p piece of aluminium extrusion (pop into a double glassing company and ask if you can rummage through their skip) for a fence, or even a length of hardwood.
Here is the V27 http://www.rutlands.co.uk/workshop-&-po ... -gauge-v27
On the other hand if you are going to use it on both a router table and table saw that is different, and opens the door for the rest of the gauges.
By the way what router table are you going to get?
If you need to know anything about the mitre gauges just ask.