It depends. I use ready up alot because I run and gun with shotguns and the bizon hipfiring and it really helps. Quickdraw is helpful with ar's and lmg's but it def should've been a 2 slot perk. --- There's a fine line between not listening, and not caring. I like to think I walk that line every day of my life.
Ready up on every class no matter what. Especially close quarters classes. I sprint a lot and the quicker recovery makes my life a lot easier.
Quickdraw on sniper rifles, marksman rifles, LMGs, and slug round shotguns. I use quickdraw when I can't afford to hip fire, or on slow ADSing weapons. My logic behind not using it on buckshot shotguns, ARs, and SMGs. --- A beast of the night... I am DARKSTAR! You may shake in terror now.