If there is any way to push it to the Silver 300, you will be rewarded.
To be fair, I haven't listened to the 200, but the 300, as a 3-way speaker stood up very well to the Silver 500. I'd be willing to say that it was ~90% of what the 500 offered; enough to make me question whether I wanted the bigger brothers in place of putting more $$$ toward Subs or some other gear.
I am not a KEF fan necessarily, but the Q950 did impress. They are a different speaker altogether. I mound them a bit too harsh in the mids... only time I've experienced listening fatigue was with my KEF audition. That said, they were aimed straight at me IIRC, and it has been suggested these are better off perpendicular or only slightly toed in.
One other note, the KEF centers have been dinged a little by some as not being very clear. I cannot speak to this directly, but if you choose to go that route it would be worth a careful audition first.
Lastly, I really liked the Motion 40 compared to the B&W, however, compared to it's bigger brother, the 60, it could not compete. It has been said here that the tweeter axis is very sensitive and narrow, for all the Motion Speakers. This means if you move around, you may find yourself in-and-out of good sound.
The MA Silver 300s and 500s, on the other hand, simply stood out over all of these to my ears.
The only reason I didn't end up an owner of some Silver 500s?
...Is in my signature.