They all have their special place. Truthfully, the resident rotary simulations in these newer plugs are really good. As you know, there are purists in nearly everything, and many will not ever be satisfied. These developers give us a lot of parameters to tweak, but most will never use them, and settle for factory presets, that usually suck.
I still have VB3 1.4 in most of my setups. But, I am constantly checking the newest thing out. I used B4 for a long time, many years ago. Not knocking it now, but the rotary sounded cheesy. Vb3 was a big step ahead, and I still love it as it is. What has happened is there are some really good plugs on the market, all at the same time. There are also many fast coming updates as well. It makes my head spin like a Leslie sometimes. I decided to make some sense out of all this, if possible. I am doing the same thing with amp sims too.
I am trying to get some hold on these plugs to closely emulate certain artists’ setups, if possible. What we run into, as in guitar amp sims, is that many artists have special mods that are mostly not available in most plugs. And, there is the live aspect that comes into play. Will it sit well in a live mix?
They both are favorites of mine. Other than the jazz greats, I started teething my chops on Booker T, Billy Preston, Goldy McJohn, Jimmy Greenspoon, Mark Stein, Felix Cavaliere, and many more I can’t recall at this minute. I have been able to dial in settings close to most of them.
I still carry oil on me when I sit in at a couple of local churches. I always do a little maintenance on their organs cause no one else will.