I personally am moving towards .org as the defacto domain incase the .com is not available especially if it is educational, guide etc. sort of website. I have also used .net for creating large authority websites. Recently, I have also seen .guru, .me, .co etc. ranking very well in SERP too. So, it does not matter much.
One more thing. Do not go "only for EMD". Nowadays, EMDs are also seen as a bit of "probably spammy website" with thin content especially in long tail keywords. I hardly find many EMDs in Google SERP nowadays. Go for variations of the keyword instead if possible.