Just IMHO:
- You may be short changing the Phil3, I know Dennis say they are not hard to drive but given their sensitivity and impedance graph, I wouldn't think the 990 can do them justice, even when only 2 channels are used.
- I hope the R2D2s are getting your largest ATI amp. The dealer where I auditioned the previous version D1 (i.e. not D2), heard huge difference when driving them with a Bryston 14B SST vs the 150W Musical Fidelity. I didn't hear such difference other than with the 14B he wasn't worry about turning the volume up so yes I heard the bass drum louder and clearer while the violin seemed smoother. So just in case, you really should try feeding them with unlimited juice even if they are not asking for it. There is no harm trying..
- Please spend more time on them to make sure your hearing is not influenced by their look (it is obvious you like their look better than the others), then report back and reconfirm whether your initial impression is still valid.
- If you still think they sound this good, try telling AJ he was right, that the R2D2 sounded the way he (AJ) predicted, and I hope your don't mind sharing his response. Well after that please tell him the truth because I wouldn't ask anyone to lie to their friends. Just be prepared that he may tell you its all placebo, but he may also come up with a reason for you though it is clear he does not believe much in room related stuff.