I prefer first person to third, except maybe in the case of Armored Core simply because usually the only choice you get in AC is third person.
I'm a fan of the mechwarrior series (and it just so happens that there's a new mechwarrior game
coming out too) and it is best played in first person, barring Mechwarrior 4 (unless you jumpsnipe all the time).
In fact, I still play netmech, which is Mechwarrior multiplayer and free to play. I'm in some of the latest videos by a guy called Sir MMPD:http://www.youtube.com/watch?v=qRkd8_IycCchttps://www.youtube.com/watch?v=GY6YuRSJcTo