There is a calculator on the top that can help with some stuff.
In general, I would stay away from any “dual” ESCs even if running two motors.
The most general guideline on how much power an ESC can handle is its “battery max” current rating, so if an ESC is “50A” or something, that’s referring to this number. The 65A you refer to would be the “motor max” which is generally always higher than or equal to the battery max.
You also want one with good reviews.
Some ESCs require more assembly, like the Cheap FOCer and might be phsyically large, others like the Super mini Maker-X ESC are very small physically
Really it depends what you need.
Cheap, Fast, Good – you get to pick any two. “Fast” generally means it’s something you can buy and not manufacture yourself.
Also things like how much space you have make a big difference, and what country you’re in – your profile doesn’t say.
Also of note is the Flipsky Mini FSESC 4.20