Ford fuel pump

I've had 3 Ford pickups and had a fair amount of fuel pump trouble in all three.

My current pickup is a 1994 F-250 with a 351 engine.

I've replaced both fuel pumps (the internal ones in each gas tank) already once.

I think the rear pump is going out again and it's been less than a year since I put it in.

I'm as careful as anyone with keeping things clean, reputable fuel suppliers, etc.

Anyone have any comments on what would cause so much trouble or how to avoid it? Would a true blue Ford pump be much better than Autozone or Oreilly's or someone like that's brand?

It sure is a pain dropping the tank down and replacing the unit.

Thanks,
Howard H.

PS - not trying to start a brand war - I've got 190,000 miles on this pickup and it's still rolling strong, except for stuff like this and the hydraulic slave cylinder on the clutch...