I've not really had much experience with mace oil but from what I can tell I prefer it, more 'rounded'.

And I'd say it's much better than whole nutmeg mainly because of ease of dosing, just swallow a few capsules rather than choke down half an ounce of minging oily powder, so there's no nausea/'toxic' feelings from that, and don't really notice any negative physical effects apart from a little bit of dehydration/red eyes and if not consumed right can cause mild diarrhea.