Choosing between DOOM and Quake my choice would be DOOM, but I enjoy Horror games, that is why.
Either way, this game is amazing, and definitely one of the best purchases I could've made.
I played and finished Quake II the other day out of boredom. I forgot how long that game is, but it was worth it to play an old classic again.
You can be sure that I'll play Quake IV again sometime, but it will take some time.
I am looking forward to the new Quake, as the story needs to continue from where Matthew Kane left off.