You want me to give you all my little "secrets"? You would likely be way better at the game than me if I told you. I rather be vague and give you the info you need. I don't want players to skip the learning process. If I gave lessons it would be different.
In-game sensitivity is different with raw input off. You cannot use the 2300 setting without raw input on because you will get negative acceleration. You will get negative acceleration even if you have sensitivity set to 0.01. When I use the 450 setting, with raw input on, I notice a delay with the crosshair movement.
Skipping angles is not that big of a deal. You will always skip angles. It's about how much skipping you can put up with. Your CPI does not determine if you skip angles in-game, it only gives you more cursor speed the higher it is. You skip more angles the higher your sensitivity is in-game. You can literally be more precise with a lower sensitivity than a higher one.
Why not have a mouse with 12,000 CPI that way you can set your sensitivity very low? It's a bad idea because sensors cannot do such numbers hardware wise. It would create to many negative attributes -- it's not worth it for the low sensitivity in-game.