Outside of the licensed club tracks, the ME2 and ME3 soundtracks were very forgettable. The few songs I remember liking were just paying homage to tracks in ME1 and I would rather listen to those instead.
ME3 has maybe 2 songs i really like. Mars and the one that plays once Shepard choose his last decision on the Citadel until we reach the part where the Normandy crashed on that jungle planet. Probably the only good thing from that ending.
The rest of the songs i like from ME3 comes directly from ME1.