Speaker Suggestions for Next Move

@jbhiller Curiosity killed the cat. I know Cornwalls well and I know for a fact they are capable of much more than the usual set up. They can get very close to the state of the art with the right electronics. They can image much better and have more depth, much more depth. Instead of buying new loudspeakers I suggest you get a new preamp, a digital processing one. I have turned several sows ears into silk purses this way. On the low end is the MiniDSP SHD followed by the SHD Studio with outboard DACs. The there is the Anthem STR, the Trinnov Amethyst and finally the DEQX Pre 4 and 8. What these processors will do is remove any group delays, integrate subwoofers perfectly and most importantly will EQ the system so that the frequency response of both channels is identical given the space they are in also known as room control. After the processor does it's thing you can EQ the system to sound exactly the way you want. With the Pre 8 you can even triamp your Cornwalls. You will never look back and you will lose any interest in new speakers. 

The only good reason to look at other speakers is if you want to switch to a line source system like the Magnepan 3.7i and 20.7 or Sound Labs ESLs. These speakers will give you a larger life like image at the expense of maximal volumes and efficiency. The reason Cornwalls have the potential to be so good is they are very efficient and like Dipoles have very controlled dispersion  which minimizes room interaction. They are not built to the same level of quality as a Magico or Wilson speaker which means there is more variability between speakers which causes issues with imaging. A digital preamp fixes this problem perfectly so that the channels are even more identical than the finest speakers. 

Classic Audio Reproductions have some interesting high efficiency loudspeakers that are probably a step up from the Cornwalls.  They are highly customizable.

I'm on board with the Volti recommendations also heard the Rivals a few times and really love them. I've not heard the new Lucera which I'm sure is fantastic. I also think staying with horns is a good idea as you may miss that live quality horns give you.

That said Fyne, Spendor Classic, and Devore are all fine choices I'd be hard pressed to choose between them though the Classic 100 or older versions in the 100 series are definite favorites.

I'd stick with horns or open baffle speakers, I went from open baffle to box speakers, never could quite deal with the box speaker presentation. After that went to Klipschorns, I've modded them extensively, only bass bin remains stock. Klipsch Heritage can image and sound stage with tractrix horns, in case of three ways, tweeter on custom baffle, need at least physical time alignment and independent movement of mid driver and tweeter in case of Klipschorn.

Of speakers you mentioned I'd go with the Volti's, I'm using Volti tractrix horns on my Klipschorns. Greg's modded Klipschorn crossovers were inspiration for my crossover mods.  You were onto something with your modded Cornwalls, the Volti's can take you the rest of the way.

@jbhiller I have a pair of Razz. Entry level into the Volti line. I am completely over the moon with them, every time if fire them up I just feel so completely satisfied and happy with them. I picked my pair up directly from Greg at his shop. I had the opportunity to listen to my Razz next to a pair of rivals and a pair of new Vittora in prototype. They all shared an amazing dynamic character, there’s definitely a house sound there. The Rivals are much bigger, sound much bigger, and go lower. But that sweet coherent midrange was so much there across all three models.

i did listen to the Lucera at the Fla expo this year and I was seriously trying to figure out how to work out a deal with Greg right then and there to trade up!

The razz depending on finish and grill cloth will go for about $7500, the Lucera about $10,000, and the Rivals about $16,000. 
 

check out the Volti site, Greg’s got it all well explained along with pricing and what he has on hand for sale. Plus he’s a really good guy to deal with. He really wants to make sure his customers are completely satisfied.