turning brake drums, surface flywheel-amazed!

96 Breeze needed rotors turned, $15 a piece. New ones were $16.....in stock. Oreilly. Put 'em on, no shudder. Got my '14 Caravan rotors turned. They make more noise now than they did but they are not pulsing.....? wife is asking WTH....F'n new cars. SC400 brakes stop on a dime, are original rotors with 180K on them and new OEM organic pads.