Research
I have based my own portfolion on the one published by Tim Hale on the
Monevator Web site.
The Active Vs Passive Fund Management is not war and piece as there are no right and wrong answers.
Perhaps we should just focus on the probability that passive investors get better value for money than active investors in the long term. Both need to look at the performance of their investments over time and make adjustments and if you are happy with less effort cost and ret accept market returns then passive is a good answer.
If you want higher fees, more sleepless nights and possible higher return then active fund management might be for you, but don't forget that 95% of active funds do not beat passive Fund managers and very few have been around for the term of an investment life cycle. If you invest in a Mutually owned Company like Vanguard the investors are the shareholder and Jack Bogle does not have the wealth of some active fund manager CEO's
You have to do what is right for you, not the Fund Manager.