Would you Upgrade?

Hi everyone, i'd like to get everyone's opinion on upgrading my set of loudspeakers.

I would be going from a pair of B&W 802D (the first of the diamond models, around 2010) to a pair of Focal Sopra 3's.

Is there much of an upgrade making this change?

I heard the Sopra's at an upscale dealer with a close to perfect setup: speakers about 15 feet from the front wall and about 10 feet from the side walls. Electronics were all Esoteric, including their $44,000 Grandiosa M1 monoblocks, preamp, cd player, power regenerator and $3,800 Cardas clear stereo speaker cables.

I'm not sure if these speakers would sound much different from my current 802D and my humble Classe CAM 100 monoblocks.

Also, how many years do speakers last before they degrade (speaker, crossovers, etc...)

thanks to everyone in advance.