If you like your knives then you will purchase a decent wooden chopping board anything from £20+ would be a good starting point. If you want to have a glass or stone chopping board then get one of those but be warned, using them to chop anything is horrible and you will spend a lot of time sharpening your knives.
So speaking from personal experience, you should only be considering a wooden board.
If you have decent knives, then chop on wood. Glass will be just as bad.
What's the trouble with wooden boards? Are you not oiling them and then finding they're going nasty or something? You need to maintain them, as you would your knives.
I have both a massive wooden board (though not expensive) and a granite board. The granite one was dead cheap too, from Argos of all places: http://www.argos.co.uk/static/Product/partNumber/8423689.htm
Weighs a ton and looks good. I only use it for soft meats like chicken and steak as it wipes clean easier. However what I use for the most is as a rest for pots, pans and baking trays and also for the centre of the table when serving hot things like pies and paella etc.
No it doesn't need to be.
I recommend you spend a bit more because typically the more expensive ones are thicker/more solidly constructed and therefore won't warp over time (saving you money in the long run)
If you can get a nice one for cheaper and you look after it you'll be fine.
I personally much prefer plastic chopping boards. I have a set of 4 colour coded Joseph Joseph ones, really nice to cut on and good for the knives.
They look great too in the enclosure they come with
That looks very nice, I usually end up propping my board up with something spare over the lip of the sink when I'm letting meat rest. Where are you getting this from and how much does it cost (might end up on my Christmas list).