IO Sets for Bio Armor

[Alverant]

My brute is getting close to lv50 and I plan to do a respec when I get all the powers and enhancement slots. Can someone suggest which IO Sets are best for that powerset's abilities (and how many slots each one "really" needs)? Saying that a power just needs two slots for END/Health are good too. I'm not really a min/max player but as long as I'm doing a respec anyway why not get the most out of it. If it helps, I solo most of the time and try to focus on survivability and doing damage. Stuns are a bonus, not a focus. My primary is electric melee.

Thank you!