I have flown a CDI for many years and feel quite comfortable reading and using one. The only exposure I have ever had to an HSI is on the private and instrument written tests and it didn’t seem very intuitive to me. Maybe flying one would be easier than figuring out the FAA’s questions about them. I have a chance to buy a high end autopilot setup that includes an HSI. I suppose that with a GPS slaved autopilot, maybe it doesn’t matter because you’re not normally hand flying it anyway, but I think I should be proficient with whatever is in the panel. So.... is the HSI intuitive to migrate to after being comfortable only with a CDI?