If you are trying to have a domain that you want people to remember, most people will try the .com first. If you are always going to get traffic with links, it really doesnt matter.
buy a few domains they are quite cheap at the moment .infos going for $0.99! Users sometimes type the wrong tld and it saves your users being redirected to some link farm.
However if i had to choose .com all the way. Sounds more professional.