I’m about to venture into quad copters for the very first time and boiled down the choices down to two frames. The F450 flame wheel clone or an S500. At first the F450 seemed the best option however, I’ve seen the it is quite flexible and can have issues with vibration, on ther other hand the S500 is a heavy frame. (I like idea of being able to carry a camera.)
What will be the main purpose of your drone? Very important to think it through up front unless you’re willing to build multiple drones down the road and it cost $$$.
If you are simply learning about quads then the deciding task is easier but if you have few main objectives and then certain factors have to be taken into consideration upfront.
A drone can be just to fly it
Fly it and have live video
Speed racing - whole different category of drones.
Someone wants to use them for photography
Some use it for object avoidance
List goes on
While you are deciding on a Frame and electronics, clarify your end game in your head first. You don’t have to have all the bells and whistles day one, but following factors will impact your future enhancements if not calculated correctly day one.
Frame size. Can it accommodate all the electronics you are planning to put it on at the end?
Motor size - Lift capacity and speed?
Max battery size. Remember ESC, Motor, and battery voltage are related with each other and go hand in had. You can’t simply upgrade one later and expect dramatic changes and electronically it maynot be possible.
Here is the fun part
You selected a motor that has 1000 Grams of lift capacity x 4 = 4000 Grams of Thrust using X size Prop…perfect!
This will tell you what ESC current size you need always go 10A higher than what you need. BelHeli ESC’s are the best for starters.
Now, you know what max battery size can you use.
Once you know the above, and you know the prop size you need, you can determine frame arm lengths.
Now, you can search for a frame but keeping in mind does the frame has enough room to fit all of the above?
I am on purpose not recommending anything to you The reason is that so you can analyze everything upfront on your own and you will make a wise decision by yourself at the end.
Ok then first narrow down what camera You will use. That will change everything because it will determine the Gimbal you will need, the weight of the camera and gimbal will define motor size and then the rest.
So decide on a camera that you have used before and you like its features functionality.
I can make some suggestions but the real photography cameras are big, heavy and expensive.
On my list the camera would a Runcam 3 split, It’s a bit like ‘Moore’s Law’ the more you add you need bigger props, motors and battery. The radio would be Jumper T16 from what I’ve read it’s comes out rather well for the price.