I've heard both the Amati Futura and the Olympica Nova 2. The former was the most astonishing audio experience I've had, beyond marvelous, but the electronics were a lot of money too (like 35000 - 40000 Euro retail in total). I mean no offense, but your current electronics will most likely not be up to the task, so this makes sense to me only if you are planning to upgrade (and I mean substantially upgrade) your electronics too. Also, the Futura tweeter is more reserved, depending on pairing they could be a bit dark.
The Olympica Nova 2 was almost as nice in the mids (but not quite), which still reads as "great!", had exceptional, sparkling but smooth highs that I really loved, more so than the Futura's (and definitely not as subdued), and rather ambiguous bass even driven by the same Accuphase E600 amplifier that drove the Futura's quite well. Maybe it was the positioning, maybe the lack of burn in, maybe it's just that the single 7 inch bass driver is not quite up to the task (or to my expectations). I'd consider the Nova 3 instead. Oh, that tweeter, lovely! Also, maybe the need for upgrading the electronics would be a bit less stringent that for the Futuras but still very important I think.
Another thing to take into consideration is the availability of spare parts. I've considered the Futura myself and I emailed Sonus Faber to inquire about this matter. Disappointingly, they directed me to the local distributor, as if the spare parts policy would be the distributor's! It scares me to think I could buy the Futura's, have a tweeter accidentally damaged someday and be left out in the cold!
