Thanks for the correction - my opinion of the TB20 has gone upconsiderably!
I'm assuming that's true LOP, GAMI'd & Deakin'd? Pretty impressive for a single piston, especially compared to 'book' figures.
I agree, the Javelin isn't very useful for business, and the seating arrangement isn't exactly helpful for long flights, and you'd really need to be current on a mil (or ex-mil) jet to be really safe. Coupled with the high wing loading and potential for busting Mmo (and probably Mach 1 in a shallow dive), it's a complex aircraft, although engine out won't be a problem.
It's a great time to be alive if you're involved with aviation - personally I think the golden age has just begun, especially now that carbonfibre is really taking off.