I'm a bit late to the party, but I thought the Zoom recording sounded fine, although I'd agree with others who suggested some EQ might be in order. I listened to Darkness and Light and agree that the guitar sounds better but my guess is that the difference is due to mic positioning and/or difference in room reflections. Trial and error will be your friends here. Also, it may be difficult to get a good balance between vocal and guitar if you're doing it all in one take.