I'm going to go out on a limb here and say that ebb and flow using quality nutes and rockwool is easier and more stable than any other way of growing. This is just my opinion.
Quality nutes will give the plant everything it needs so there is no guessing as to a deficiency or excess. If you have a problem then the answer is the same almost every time. It is either temperature/humidity, you pH meter needs calibration or your watering schedule is off.
With soil, you are always guessing and posting pics and asking people what is wrong, yet no one really knows. Many rust spots and curled leaves are not diagnosed properly and root rot stunts buds every day due to soil watering issues.
IMO, rockwook, ebb and flow and high quality nutes are the only way to go.
I hope this helps.