htmldatatable

Before asking this question, I visited many other related ones and tried to gather the maximum of information. But, what I found till now let me understand that there is no real/major difference between ui:repeat and h:dataTable , and that whenever we can use h:dataTable we can also use ui:repeat (sometimes one of them is a little complex than the other, but at the end we got same results). So, is there any use cases where the only choice is to use h:dataTable ? or the opposite (only choice is ui:repeat )? is there any use cases where the only choice is to use h:dataTable? If you want to use