Day 1 purchase. I've been playing a crapton of ME3 Multiplayer and I've enjoyed enough of the Mass Effect series to want to play more of it.
BTW, interesting numbers from Bioware: Mass Effect 2 has the highest completion rate over all of Dragon Age/Mass Effect series at only 56%.
ME1: 40%
ME2: 56%
ME3: 42%
DAO: 36%
DA2: 41%
http://www.joystiq.com/2012/08/13/ma...agon-age-seri/
Talk about a silent majority.