Granite is nice, but expensive. Some beautiful grains out there, but you will need it precision cut with specialist tools. Can be a bugger to repair if you drop anything on it and chip it though, especially with darker surfaces.
I am currently waiting to move into a new build house and we are at the point of picking work tops from the spec. Having had my heart set on a nice piece of granite, I am now however considering the virtues of Corian...
http://corian.co.uk/Corian/en_GB/index.html
Good luck. Post some pics of the finished job
