Hailey's alright. But it's tired and bland now on girls. On a boy, on the other hand, it's very refreshing to hear; very handsome and dashing imo.
I prefer the original spelling,
Hayley.
Hailey's tolerable too, though it's a distant second to
Hayley to me. Anything other spelling looks kre8iv to me (except
Hallie, which I consider a semi-separate name).
Miranda