I just made a decision today that puts an end to my ramblings about my speaker search for the office (a lot of wasted speaker research). Today, I messaged an A'Gon member with KEF Blade2 in a small room, 14 x 13. He told me his impressions, he has had Blade 1, KEF Ref3, and now Blade 2 in that room. He also heard the Blade 1 in a 15 x 12 room. Long story short. I am going straight to the KEF Blade 2 and forget getting a smaller speaker for the office. It will be near-field of course but it can work. Life is too short to not get what I really want. I will eventually move the Blades to the living room once my toddler is a little older. I will initially use the Benchmark AHB2 mono amps because they sound great and are a small form factor (important for office). I want to get the T+A 3100 integrated in the future once I move them to the living room.
Getting back to the Vivid. The Kaya is different and maybe better for someones needs. Look at the link below.
http://sunnyaudiovideo.com/"The position of the tweeter and mid-range driver gives KAYA speakers a more directional sound, taking you deeper into the performance. "
This is likely the key point for me that I have heard a few times from Vivid on this new line. They are comparing the Giya and Kaya lines there. This is supposed to improve imaging. The Giya is supposed to have a bigger sound stage. Technology moves forward along with knowledge of product development so there is a chance the newer Vivid tech is better than the older lower Giya models.