They are both very good recordings of a nice song.
I like the male vocal, but the female vocal suits the song better.
The one thing I think could be improved on her vocal is to make less use of the semi-spoken "(good)night" at the end of each chorus (e.g. at 1:06). She does it every time, and I think it's a bit too much. I love the first one she does, and I'd probably leave it at that - just sing the note normally from then on.
I love the guitar solo in the male version, though. Keep that!
Also, it would be good to hear a wee bit more "light and shade" in the arrangement - i.e. bring in some new instrument or part every verse/chorus or so. How about some harmonies? That might be a way to get both voices on the track at a comfortable pitch?
They're both very good recordings - the above is just details.
Keep up the good work.
Cheers
AB