[Formulajones]

Personally, I save the NOS parts for high end (expensive) restorations that need it for one reason or another, not particularly for the reason of reliability per say, because cars like that aren't really driven much at all.

It really just depends on the purpose of the car. Since I daily drive classics, I look more towards reliability, so NOS wouldn't make much sense on consumable parts. So I go a different direction that I explained earlier in this thread, and it would apply to most people here that basically have nice classic cars they enjoy that are not necessarily concours restored stuff.

Want reliability? 2 things I've found that work reliably. Either a RobbMC pump that uses good internals, and even offers cheap rebuild kits for easy repair when the time comes. Carry a spare.
Or..... get yourself an EFI tank, put a good Walbro pump in the tank with proper feed and return lines and enjoy a more modern fuel system that is used in millions of cars on the roads today. That's about as good as it gets.