ETF or Exchange Traded Fund has much more flexibility than mutual fund. lower fees, or u can buy/sell just like stocks in the market.

but even if we invest directly online without any agent, the fees is still 5.5%
so no different*, we just need to compare the fees with other funds' fee

*the difference is that if we have a good agent, we might need to spend less time to gather info that we need.

cons for mutual fund not limited to PSF and PIF are
due to higher fees than stocks, REIT, ETF
you need to invest for at least 3 yrs to have real profit
so u better don't need to touch that money during the first 3 yrs