I use Tri-X and HP-5. I like Tri-X's tones better; it is just an amazing film. I keep stocked up on it. But I still use both of them. I like FP4+ for my "everyday" film, but I'm in the process of testing new Plus-X too.
I have used a lot of TMax in both 100 and 400 speed; I have had good results by precisely controlling time and temp in processing, made easy with my Jobo. I recently shot my first Delta 400, though, and I think it may have the edge. I go about this pretty systematically, so that I can achieve consistently good results, so I do a lot of testing both with gray cards and "in the field." (Gives me an excuse to burn film too without wifely scrutiny

)I figure, why not hedge my bets and learn how to get good results from a few of each manufacturer's films?
I think I'd miss Kodak's chemistry more (Xtol just about exclusively.) I have recently gotten set up to make my own developers, starting with Mytol, so I have a fallback there as well.
I don't understand the jihadist attitude of some towards Kodak, or Ilford, or whomever has pissed them off most recently in making business decisions to try to survive. Their duty is first and foremost to return profits to shareholders, and to try to divine market demand in order to do so.
I say use the tools available, and learn how to use more than one toolmaker's stuff!