Hi Amanda, welcome to the madhouse, sorry menat henhouse!!! lol I'm not a keeper of Bantams, but they are ideal if your garden isn't very big. Eggs will be smaller, but hey ho, you just eat twice as many!!!! lol
I think most of the pure breeds come in bantam size, so it depends what you want. any particular colour? I think the light Sussex Banty, nice and white with her black and grey collar look nice.