I don't have a p bass so I guess I'm safe lol. Right now all I have is a (MXR m80 bass DI + distortion) and the drive on my sansamp BDDI. The M80 is very smooth and heavy with a blend knob that brings the bottom back in. The only issue I have with it is, it automatically turns on a mid scooped "color eq" when the distortion is enabled. It sounds fine but I have to run it straight into the power amp so it doesn't clash with may amp's pre.The problem with distortion is it wrecks the P bass 'bump'
The BDDI drive sounds uneven all across the spectrum. It's a great emulation if it's what you want, like if you're in a Police cover band. It's just not for me. Imo it takes away the sparkle that comes from those insanely scooped mids. I pretty much only use the sansamp for Country.