I currently own both and think that both are outstanding bows in terms of performance and design. Which bow will be a better match for you is impossible to say given that the grip, weight, and overall feel of each bow is so different. I agree with the advice about trying to shoot both bows before making your decision.
Personally, I prefer my Widows over my ACS bows...but that is simply because they match my shooting style and preference for a forgiving bow more closely than the ACS. Both bows are top notch in terms of quality, so you can't go wrong there. Find the one that feels the best in your hands, and you'll have a winner no matter which you choose.
Claudia