I'm sure everyone here has his fantasy of what to get if winning the
lotto. If a few million bucks suddenly show up in my bank account, the
most I'll get would be a single engine turboprop, a PC-12 or something
like that. Even in the world of turbine, it's hard to beat the cost
efficiency of single engine prop.

This is never, ever the case with a jet. A jet can save you time but
will always cost more in money.