I used Kentmere 100 and 400 films. They are good general purpose film, nothing special with them. They are different form FP4+ and HP5+.
It is not true that they are very grainy. Quite normal B/W films.
I agree; I usually use Ilford films, but have occasionally used Kentmere, processed according to the manufacturer's recommendations, and, as you say, quite normal, reliable quality, general purpose films. I would prefer to use them (or Ilford) for consistency, compared with cheap unknown products.