id like to know how coolits are 'not real water cooling'
Rasa is very quiet and will outperform the CoolIt or Corsair H50/H70 by a large margin. Those all-in-one LCS coolers use liquid, but it's a sealed loop with a weak pump and limited by radiator size and low flow rates.
Real watercooling consists of separate, stand alone components that work interoperably with any other brand of components given that they all conform to the given tubing size and mounting specs for your hardware. You can swap out a single component for a better/different component...or add more to your loop as you wish. Temp/cooling performance is far better with a full loop, and you can expect temps on CPU's to drop as much as 20-30C at full load and GPUs to drop by 30-40C at full load...depending on individual setup.