I put lots of miles and lots of years on a holley blue. I never had it let me down, I started to carry a spare when I did drag week but never needed it.

With my EFI I run two walboro 255LPH pumps. I killed one pump on drag week and had a second one die almost instantly. Looking back on it the problem was teething pains from a new EFI fuel system and not cleaning the 10 micron filter often enough. Since then I have had no problems with the walboro pumps mounted externally.