First one was my favorite, by far--except for the terrain vehicle--they say that's fixed, now, but it's a bit late, imo. The first ME and the first Dragon Age were RPGs...the sequels were all about combat...which nixed both for me as far as interest went in the sequels. ME could have been so much more had it continued in the RPG mold--just like the DA sequels. I know that lots of people liked the sequels but I could never get motivated--as I found clicking the mouse to shoot stuff constantly an annoying distraction...;)
It is well known that I don't make mistakes--so, if you should happen across an error in something I have written, you can be confident in the fact that *I* did not write it.