So with the release of the demo I've been playing a lot of Forza and just wasn't happy with it in 16:9 on my 21:9 monitor and although it looked ok stretched across the 21:9 monitor there was always a thought in my mind that 'it's not quite right.'
So I decided to go back to big screen 16:9 racing on console. Bought a new Sony Bravia 40" 1080p set yesterday and fixed it to my rig.