I know your wiki topic, which improved over time and which I find a valuable resource. I usually try to do my homework before asking but I didn’t find an answer to this specific question; maybe you can point me out to the right chapter ?
In this case, as I’m still struggling to decide - for the exUS portfolio part - if going with an IE or US ETF (the latter being cheaper to buy and broader diversified) I’m especially interested in real life experiences (as I also asked here: Tax optimisation for ETF investing )