For a 2001 Sport, leaning towards NGKs or Bosch +4's, read lots of pros & cons for both...so what do you recommend and why?

stock plugs

as in OEM? Why? Why not so called performance plugs?

Stock (OEM) plugs because a Cherokee is not a performance vehicle and its engine runs fine and forever with OEM plugs. Performance plugs are designed to address problems that a slow-running, relatively low compression Cherokee engine doesn't have. But if the money to buy performance plugs is burning a hole in your pocket, go for it. It's like buying premium gas - it doesn't help but it doesn't hurt either.

Stock (OEM) plugs because a Cherokee is not a performance vehicle and its engine runs fine and forever with OEM plugs. Performance plugs are designed to address problems that a slow-running, relatively low compression Cherokee engine doesn't have.

Right on :thumbsup:

-Nick