I looked at an A36 also. Very nice, but it was about double the price, not significantly faster, and used about 1.5x more fuel at UK-type low levels where the TAS gain isn't much.
I know one can argue for ever about stuff like this and different people have different budgets. The engine fund of a turbo engine is a lot higher. Even little things like a fitted oxygen system cost a fortune on the bi-annual, whereas a portable O2 kit costs nothing.
Current TB20 build quality is actually very good. I don't like the combined circuit breaker / switches but they are reliable and work just fine. The general quality of the electrics is excellent.
The instrument panel doesn't sag in the middle - it's a separate section. All three parts are separately rubber mounted. The vis is way better than any Cessna or Piper I've been in.
What lets a TB20 down is the same thing which lets any current-model aircraft down: crappy American-made avionics which cost an absolute fortune and are unreliable. People moan about their engines not making TBO but for an IFR aircraft, it is quite feasible for one's avionics bill to exceed the engine replacement cost.