Big 3 or grounding kit

[gameguru1360]

planning on upgrading the crappy factory audio with aftermarket head unit, 6.5" components, coaxial 6x9's, 2 channel amp to power the front components, 1700 rms HF Brutus mono amp to power a 12" alpine swx-1243d sub and a deep cycle battery like a Kinetik or Shuriken as my starter battery.

Not sure which one to do or which one is more effective, but I will do one and/or the other. Is the Big 3 electrical upgrade more effective than the grounding kits made by Racingline and Stillen?? I would think the Stillen & Racingline grounding kits are more effective because there are more grounding locations than the Big 3 which is only 3. But then the Big 3 might seem more effective because you can use thicker gauge wiring like 2 or 1/0ga.....

[gameguru1360]

well I got some feedback on another site and they said to do the Big 3 instead. The grounding kits for our altimas are mostly for semi new altimas. For my 09, they said it's not going to help that much since for a slightly used car, the factory grounding points aren't corroded. The grounding kits help to decrease resistance for when those grounding points start to have corrosion.

So they said that I can still come out ahead by doing the Big 3 and a better stock battery such as a gold duralast or Superstart