So, just to add a comment, the Brenso is (as I said) just an idea at present, so indeed, as Lugia says, if I want to go down that path for less money, I could try out the Tiptop/Buchla 258t. Of course, if it can do the same thing for a third of the price I'd be very happy - as many would.
-- joesh

The 258t will not do the same things as Brenso. It may do pretty much what you want, though, and it will be almost half the size and a third the price. Better direct points of comparison are the Buchla 259 and its Eurorack descendants, including ones made by Verbos, Instruō, Hexinverter, Endorphin.es, and others, which tend to be large and expensive also.