We have run both the R182 and the TR182, and found that the
turbo and its systems gave some trouble. The exhaust piping runs hotter
and springs more leaks, the wastegate linkage can be troublesome, and
the carb is really hard to get at, as is the dual magneto. Many
scratches on the arms and hands and a temptation to use inappropriate
language.
The gear needs watching. The pivot has to be kept properly
adjusted or the airplane's weight ends up on the wrong place on the
trunnion and cracks it, letting out the brake fluid which runs through
a channel drilled in it. The nosegear has a locking pin that's subject
to cracking and falling out.
That's all from my standpoint as a mechanic. If you have $30K
to spend, someone else will fuss with those problems. From my other
position as a pilot, the turbo makes high-altitude cruising possible,
if you have oxygen, and this airplane is a sweetheart to fly, with no
bad habits other than a wicked float if you don't get intelligent about
approach speeds versus weight, and that float usually means a
faster-than-normal touchdown and flat-spotted tires because the tires
are small and the brakes are powerful. The airplane's Vso is 37 knots,
so you have to land it when it's ready to land. Not before. The
15x6.00-6 tires cost a lot more than the ordinary 6.00-6's.

Dan