Ok, so let’s get into this. Firstly, the best things are not 10% more expensive, even if they’re only 10% better. The people with the money want the best things, and they’ll pay whatever to have it.
As for the SV, it doesn’t have the epic air intakes. It also has a weird look caused by the slanting-down diagonal below the intake (on the Ultimae it slants upwards, making it look hugely better). Then of course you have the crappy, fussy, ‘SV’ painted on the side- just in case we don’t know what car it is. I like the SV nose (like the original A), but the wing spoils the back for me (though not as horrible as on the SVJ). Then there’s the fact that it’s five+ years old, missing all of the myriad of small improvements made in the years since.
I am fortunate to own a 1987 911 930. Those last years of the last NA turbo Porsche (87,88,89) remain by far the most desirable classic Porsche because they had the most advanced generation of the tech of the time while maintaining the fundamental character. I see the future of the Aventador being much the same, in the shape of the Ultimae.