Wharfedale Diamond 11.5 or 250

There's no much on the internet about the difference between these two set of speakers, the 11.5 looks like an upgrade of the latter, but they don't say much about them, except for the different tweeter.
I didn't the possibility to listen any of them, do you know if they sound different, and if the price gap between (more than 300€) is justified?
Go for Wharfedale Denton 80th, still remains the classic best bookshelf speakers for the line.
Those benefit HUGELY from cap upgrades, even inexpensive ones like Mundorf MKP caps can transform them.

@erik_squires would you say the same for Wharfedale Diamond 10.7s?

If so, could you elaborate on what’s involved in upgrading or point me in the right direction?