Mechanical type is more durable, computer control is easy to fail due to humidity or high frequency of use, and the maintenance price is more expensive than mechanical type. Take 5L as an example: PCJ505, PCJ50 10, PCJ50 15, pch501/etc. Personally, I think PCH50 1 1 is quite suitable for families with 3-7 people. One pot has two liners (stainless steel and coated liners), and the price is around 200 yuan. Other models are equipped with only one coated gasket.