I agree it's quite overwhelming deciding which company to go with, and which product to choose. Also depends on your risk preference, lower risk lower return or higher risk higher return. I'm quite conservative myself so I didn't want any investment risks and the extra hassles of dealing with brokers, commissions, transaction/management fees etc.
Having said that, it's probably a good idea to diversify, just to make your money work abit harder.
You'll find that the insurance companies have many products but the point is that you can customise them to suit your requirements. Therefore you could just select a basic savings plan or guaranteed funds or investment funds, plus you can also add optional extras such as medical/accident cover, life/retirement, premium protection etc.
Anyway, take your time in considering all the options.