You could have a look at Zaruba’s FPV drone page: https://zaruba.tech/products/zaruba-fpv-drones.I found it useful as a starting point because you can look at the products directly instead of trying to piece together information from random videos and forum comments. One thing I learned is that FPV drones can be configured quite differently depending on their intended purpose, so there is no single specification that tells you whether a model is good or bad. I would look at the complete configuration, including the flight system, camera, control equipment, power requirements and overall design. Once you know what type of flying interests you, it becomes much easier to narrow down which characteristics actually matter.