I really like this one too. I think the harp works really well in it. It gives it a kind of ethereal and organic feel.
Personally I think the clap could use a tad bit more punch on the attack, whether that be layering it with a short snare that's pitched down a bit, or EQing.
Also I think the break at 1:50 could last a bit longer. You could keep the drums out for another bar or two then bring them back in with the bass. I'm just a sucker for obvious contrast in songs.
Other than that, this is awesome!
Oh an one more thing... I wish it was longer