If you are seeing such saving plan from insurance with protection, you should proceed.
But you are looking at pure returns, should forget them totally from all all insurance companies.
Having said this, I am having 2 such policies. Intend to use them as kids education funds in about 8 to 10 years time.
Can explore to use regular saving plan from banks or brokerage firms to get funds eg STI ETF on a monthly basis.
Over a long time horizon, I will believe ETF is a better route as it has the lowest management fee & is the most liquid.