I'd go with a suit that would enhance physical attributes, (speed, agility, balance, jump height/length) that could be hidden under everyday clothes. It'd feature a retractable helmet capable of telescopic zoom of atleast 30x, nightvision, thermalvision, photographic and recording with the ability to clean and/or doctor images built-in and a voice changer equipped with every accent known to man, along with pitch and tonal adjustment. Jumpjets would be placed on the back of the torso, capable of reaching a height of 20 feet.
As for amraments; tazers, knockout gas and chaff-laced smokescreen dispensers would be built into the gauntlet on both arms, the fingers of which would end in claws specially designed for rending body armor. The armor itself would be resistant to the ammunition of small arms and some assualt rifles, though armor piercing rounds or anything of a higher calibur would still be lethal. The suit would feature a stealth system that would allow for near complete invisiblity. All suit functions would be controlled through a neural interface, allowing for fast-as-thought use.
As a last resort (or if I'm feeling particularly sucidal), the suit would be equipped with a sized-to-fit Purified hydroden bomb, detonated with a code only I, and presumably whoever put the suit on me, would know.
In terms of entertainment (if the one who designed the suit were so kind), audio and visual files and data would be converted to work in a system specially made for the suit, allowing for near limitless selections of my favorite songs and movies. And the whole suit would be in a stylish gunmetal grey, with a Chozo-sytle visor lit with the same cyan Isaac had.
Because lets face it, girls would dig the power armour.
