I would definitely use the X-O Manowar Armor to be a super hero, protecting the innocent and intervening in international crises, all for personal, profitable gain! Er, I mean, the name of all that is good (for me!)
Also, I would love to the the Remote Terminal feature, so that my duplicate could protect me ... from ever having to go to work again. Also, the idea of a replicant X-O armor suit sitting in my cubicle doing my dumb job is absolutely hilarious to me. I feel like I have won this contest just for providing me with that amount of entertainment while I'm sitting here, in my cubicle, doing my dumb job (aka, reading comic vine articles).