Hey @Zippy_Bird - great questions and an enlightening thread. Maybe I missed it but I guess a critical piece of this is "what's your budget"? Hypotheticals are fine but If your budget is comfortable owning an E, and is not comfortable stretching beyond that, you may want to reconsider - perhaps you should keep your E and upgrade incrementally as budget allows. As for a great family hauler, the ones mentioned - lance, Saratoga, Bonanza etc will cost considerably more both in acquisition and maintenance costs. Plus, the prices for the "family haulers" have gone the way of ridiculous of late.
I'm seeing some good value these days on Commanche's - but still only a 4 place unless Its a 260B or C model with the third row of seats. If money is not a limiting factor, then a1st generation Saratoga Turbo or Lance Turbo provide good performance with a decent useful load and the Lance Turbo won't break the bank. None of them are a Mooney but then you know that (Commache probably closest)
Just my 2c