Well i see there aren't any responses so I'll chime in. I'm not exactly sure what you mean by voicing? and perhaps anyway I didn't get a chance to fully flush this variable out.
I only heard the proac's 2.5 I believe it was. It is a very nice sounding speaker. It sounds musical. By this I mean that nearly all the music sounds good on it.
It was used and I might have gotten it if the seller was willing to bargain more. I have multiple systems and I could have fit it somewhere in the house. But i didn't get them.
Is the speaker you're considering a 2 way like the 2.5?
I had brought a 300b with me to drive the proac and it did so well. But I really don't feel it's a "set" speaker. Even though a set can drive them and they sound fine, the speaker doesn't fully engage me like the Omega speaker.
I have the super 3's, and I've been waiting patiently on the delivery of the grande 8's (not from Louis).
Now that I know the super 3's, but I don't know the 8's yet, I'm glad I didn't get the proacs.
It really depends on your cup of tea. But to me, the set sound with the Omegas is way more interesting.