RR - forgive me if it's a bit personal....but you seem to be far too concerned with what's "comfortable" and "stylish".
Actually a B200 is far more "comfortable" than an entry-level biz-jet and style means different things to different people. Is there a reason you dislike the old "rotary speed brake"?
The job you have mentioned (UK to Med) can be done in an Aztec with a reasonable avionics fit. Be a little more "stylish" and use a Baron. The total cost (purchase and running) could be less than a year of biz-jet operation. A year of that would teach you a lot - about operations, flying and your real needs; as opposed to your want for a fashion statement.
The time difference per trip is fairly unimportant for those distances. Especially if you were really thinking about an inital hop to somewhere suitable for keeping a jet.