ETFs are usually cheaper than mutual funds whether they are unit trust or investment trust. While an excellent manager of a mutual may beat the index which is tracked by an ETF, the long term difference may not be that big because the manager usually has his/her own investment style, for example growth or value, which comes and goes over the years while the index performance benefits from both styles as they rise one at a time. ETFs provide access to thematic areas of the matket, for example electrical cars, battery, hydrogen etc while there is no fund that is dedicated entirely to any of these themes.