Speaker advice upgrading from Kef ls50 ($2000-4000)

[Emerald]

I would recommend the b&w cm10s2 out of your list of available options and price range. They will give you the full range sound and crucially the "sparkle" you speak of. Also the 120 will run them well. Focal'a high end stuff is glorious but I don't think the aria range has the "sparkle" your after.  
Just my opinion on the above but give the b&w's a try!

Thanks for the info. 
What do you think of the PM1 ? it is cheaper and more suitable to my small room.