"Kentmere 100 and 400 film is made, marketed, and sold by Ilford at a lower cost than its Ilford branded film. Is it the same film as the Ilford branded film "
Reading the Kentmere 400 data sheet, no anti-halation layer, all ILford branded film has an anti-halation layer. In my experience Kentmere seem to have a bit more grain. In terms of paper, not sure of what practical difference there are, if it looks good it is good. If you like the results why spend time and energy thinking about it, go out and buy another box and go on printing.