What do you need from your wind-break plants Lord Flynn, might help to narrow down the options for you a bit? Do they need to be a certain height/width, do you want evergreen or decorative in some way or would you like an additional harvest from them, for example?
I like cheery little sunflowers too, just make sure you dry those heads somewhere safe - I thought I'd put my seed tray in a safe place when I first planted them in the spring... only had 8 left to put in the garden though by the time the mice had finished!