I have the in/ons (W22's at the time) and a W150 and I like them a lot. They definately do need a sub and I have mine crossed at 90 hz if I remember correctly. I tried it at 80 hz but there was a big dip in volume in the 80 - 92hz range or so which I guess in my room they could not cut it at that range. I don't doubt for a second the regular M22's will do better at a lower range but I much prefer the look of the W's in my situation. I use the theatre 90% of the time for movies and TV so I don't need the absolute best sonic performance.
Picture whoring alert: