Even if Paris' Wings give the highest amount of defense, PoS wings give already enough to fulfill your needs and like what has been said earlier, it gives more possibility, either from being swifter, or to get more health aswell.
Don't matter, either way we slice the pie Pos set wins. We need to remember that 6 pieces are required to obtain 5.2% final crt increase, 2600 resistant four element, and increase 65% resistant for a set of 6 pos. So, either get 6 pieces pos and never look back until arcadia comes or be ready to get wrecked. You have 1 choice to exchange from pos set, either gloves or boots, depend on your class. If you are a fighter a close combat fighter with multi-combos, you don't need attack speed, but if you need attack speed, be aware the server has been maxed out at 268, I believe that was the last number.
Anyways Paris wings suck, they used to be the best before element were introduce, but if you want to cap at 70-74 level than is the best wings you can get. I cap a Twin in 70-74 for bsq, so it depends on your purpose.