The Bvlgari Octo Finissimo is fantastic! If I had the budget available at this moment, it is one of the few watches I would buy straight away. I would probably buy one slightly used though, or definitely at a good discount from retail.
I personally love how everything perfectly comes together in this piece, similar to the affect of how a Nautilus or Royal oak is more than the sum of its parts. Very bold and a statement, but somehow it works as all elements are consistent with each other.
Apart from the case design, I am extremely impressed with the movement. Not only its thinness, but also it's level of finish and decoration which to me seems to be on par with many higher end pieces such as AP, VC and dare I say PP. It is a question how prone it is to problems in the future. It is after all extremely thin with minor tolerances for the end shakes and divisions of the gear train.
Let's not forget that despite the connotation with a fashion brand, Bvlgari has a long history as a manufacturer of watches. Having lived in Neuchatel for a while, I vividly remember passing the impressive building of the Bvlgari watch factory that produced/assembled both Bvlgari and Gerald Genta pieces (at that time mostly with Girard Perregaux movements I think).
It is quite rare that I visit dealers to see a watch in person because I tend to feel completely out of place in the luxury environment, but for this watch I made an (unfortunate) exception. I visited a Bvlgari boutique who's staff is unfortunately not very knowledgeable and try too hard to make a sale. On the occasion I visited they only had one Octo Finissimo in their display, and I was surprised to see that the black cabochon/onyx on the crown had fallen off (leaving only a spot of glue). I pointed it out to the salesperson that the watch for sale is faulty, but they pretty much shrugged and didn't seem that bothered. Despite this experience, I am still very enthusiastic about the watch itself (less so about the sales staff).
One last point. I hope I don't break any rules with this, but please find in this link a very detailed deconstruction of the movement:
https://www.thenakedwatchmaker.com/decon-bulgari-ceramic