Just general aviation stuff, primarily in a Mooney Acclaim S.
I do have a multi-engine rating, because I thought I might want one in the mountains where I live, but I’ve been very pleased with the Acclaim. It’s plenty fast and I can land almost anywhere.
I’m a big/tall guy and just don’t fit in a commercial plane seat, so it’s not just a hobby; it’s my means of interstate transportation.
The key in all aviation is to keep learning.
I know my strong points are out of control flight, high AOA aerodynamics, instrument flying, and single pilot cockpit management.
I know my weak points are a lot of the FAA/FAR/AIM regs I never learned as a young pilot.
It is all about keeping that learning process going throughout your flying "career." It doesn't always mean ponying up for an instructor. It might just mean going flying with another guy to see how they do business or reading the lastest articles in a publication about Mooneys. (Of course I will now be targeted by the CFI mafia.)