iPhone 4S 16GB White/Black brand new or Samsung Galaxy S3 Blue/White ?

i am upgrading my contract and can either get an iPhone 4S 16GB White/Black or Samsung Galaxy S3 Blue/White the phone will be on orange and will unlock te phone can do with the money and want a quick sale will order the phone as soon as someone calls or texts will need a deposit as i dont want to be sitting on the phone waiting for a buyer will provide evidence of purchase looking round the £400 range ono (or near offer) this is genuine, im in the phone trade