If you will consider experimentals, the Lancair IV-P is the king.
4-seats, 330mph TAS, pressurized. Price tag is $350-500k depending on
options.

Don't forget that most experimentals -- especially in this category -- are
completely uninsurable. You might get liability coverage, but nothing more.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"