Halo sucked. Never got the appeal.

Titanfall is wicked fun. I only had time to play for about 1.5 hours last night, and that was the most MP online I've played of anything in over a year for sure and the longest I've played in random online lobby stuff in over 2 years at least.
The pace is frenetic, but you can also "sneak" around by the wallrunning and getting to vertical highpoints. Dropping down on Titans or escaping if you are in trouble works well. The Titan execution is entertaining.
I can see playing this game a LOT, plus it was easy to load into and get into games, plus they ran smoothly.

Setting your Titan to guard is damn fun in Hardpoint.