Mike ... apples and oranges ... Ms Wind is a 50, WindS is a 110. But my own initial impression (still need a lot more flights to really say for sure) is if you got no issues with battery packs then go with the WindS. She is more solid and easier to see. Ms Wind gets lost in the sky due to the colour scheme, its hard to see the wing tips. Also, she is not all that fast, a lot of drag. For me that is nice as I have time to think and I need not worry about going to fast and missing the cue. Both have what I call a typical 'Sebart Feel'. They fly very true, silky smooth and feels just right. Handling is not too light not too heavy. Landings on both planes are the same, they float in slowly. Its amazing. That is how I describe it.
Still nothing beats seeing a bipe fly, especially the snaps and hammerheads.
Funny thing, my Angel S only needed downline and upline mixes on the elevator. The KE was rock solid, no mix. I need it for both the Ms Wind and WindS.
DISCLAIMER: the above info is given by a non competitive flyer who is only starting to learn how to fly straight. HAHAHAHAHAAHAHAHAHAAAA ...