I spent the day with millercarbon (two actually) once just him and I and the other with a group of audiophiles. For all the online bluster and attitude in reality he's a very knowledgeable and gracious host. We drank beer he found under a house or something and he cooked ribs. A day I'll always remember.
I think a day with @dekay' would be a blast.. If for no other reason I would be able to ask him about his out there references.
I would suppose a day with anybody on this forum would good one. Just to listen and talk about the hobby we enjoy would be enough to make the time seem way to short.