Sonus Faber V's Sonus Faber

Interesting, I would say just the opposite of Branimir, but I have not done the specific A/B comparison. It may largely depend on your music preferences and certainly on room size. You will get more bass out of the Cremonas in a larger room than out of the Guarneri’s, even if the REL does help. But musically, my money overall would be on the Guarneri's.

Find a pair of Sonus Faber Extrema speakers.

The Extremas are pretty incredible !

Answers to questions raised;

Branimir

Yes it is the same small room, 15' 6" X 11" 6" with the new model Jadis Mono Blocks (30 watts using KT 90’s)

Chriskeating

Price is at the top end of your range, however the Guarneri’s are still new (ex shop demo models), Cremona’s are new in the box, considering market scale in here in Australia, I think it is a good price.

Newmanoc

Music taste, average AOR, Female vocals, and average classical use, nothing too taxing.

Seating distance would be 8 feet from the speaker face, with 3 feet behind my head and 3 feet behind the speaker

Once again - Gaurneri's, no question about it.....

Given your room size, I think it is becomes a very straight forward choice - Guarneri’s and REL. I envy you - it will be a very nice combination.