Personally, I think a turbo four would be awful.
It won't sound right and it won't go right. You often read about such and such new turbo engine being lag free. But I driven enough of the latest turbo engines, including the new BMW 1M, to know it's bollocks.
The problem isn't so much as the time delay, which is admittedly getting pretty small, it's the way the boost swells the torque. It spoils the power delivery and disconnects you from the car - it feels like the car is driving itself.
I've been buzzing around in the latest MINI Cooper S the last few days and it's crap. Much boostier than I was expecting. Reviews routinely gloss over this kind of thing. The old supercharged model was much nicer.
Put simply, turbos blow
(F40 is exception that proves the rule!)