510 is a standard, a work horse, and popular. My PV uses some 510 parts. I started with a standard 510, manual, and was only really disappointed with the shortness of charge time once I figured out how to vape.
So, yes, most folks prefer the manual, some swear by automatics. I tried an automatic and it was the first time and last time I used that battery.
I see you're doing some research and asking questions. I wish you luck on the first steps in your journey. Everyone here is pulling for ya'.