I’ve heard several times that if you constantly check the interview appointment calendar that you can sometimes catch an earlier appointment when someone cancels.
The OA requires insurance. The O doesn’t require insurance. Aside from the insurance requirement they both have the same exact 1 year extension requirements. Go for the O visa.
I had an OA for 6 years. As for the better visa . . . I switched from my OA to a 10 year pensioner LTR visa.
That sounds like it might be correct. I was switching from an OA to an LTR so I already had the insurance and still have it. Another option is having $100,000 in a bank account anywhere.