Genetically engineered insulin is more advantageous.

Explanation

(1) Genetically engineered insulin is prepared by using bacterial colonies of E. coli.
(2) Animals are not sacrificed to yield insulin as it was done in the past.
(3) There is unlimited supply of insulin and at a faster rate.
(4) It also eliminates the probability of transmission of animal diseases through insulin.
Therefore, genetically engineered insulin is said to be more advantageous.