If you have a good greyhound bitch and by that i mean one that works well and is constitutionaly sound then the choice really is what do you want the offspring to do. The permetations are endless Saluki, Saluki/Greyhound, Whippet, Whippet/Greyhound, etc all down to what you want really. However if the bitch comes up short in any dept i wouldnt bother breeding from her as i am sure you will agree.