i know you have already said no grey ...but im going to share . my friend has a collie x grey/saluki x grey its a bitch around 23/24tts and a exelent rabbiting and rerreting dog ,so if you were going to add a grey to your choice mate this x or a beddy grey ore the ones to go for but if your sticking to whippet then a beddy whippet is the way forward mate atb .shaun