Welcome to the board.
To me, you have it backwards. Determine your needs first. This could also be as simple as your eyesight. For instance you can run a dot sight out to 600, if you have the eyes for it. Will it be precision, no. How much precision do you need? How fast do you need to acquire that precision? How much money can you afford to spend? Do YOU have the practice in to hit a 4" plate at 600m time after time?
Once you have all those down, then you can ask yourself what would fit your needs. I have a lot of different Vortex optics. Why? Good value. Are they a Steiner? Nope. I have some Weaver, Leupold, and Bushnell too. Selecting optics can be about compromise too. Will my 50mm Weaver 5-24x work great on a go fast course at 25m? Not really.