What is a good General Aviation VA/VO?
It all comes down to personal preference.
I would say BAVA is quite a good VA though.
British Airways is a Birlliant Va!
If you’re just asking about general aviation, I’d suggest looking into IFGAC. Great group of guys!
That is up to you on what you find important. Schedule, routes, advancement, etc.
The standard response is that you need to review the IFVARB database and decide for yourself.
Otherwise this will turn into an advertisement thread which is not permitted.