What do you think?

[2.5Inspire]

I know this has nothing to do with brakes, wheels, or suspension... but I could think of no more appropriate place for a general topic such as this. I want to know what you think, between the brand names of the particular item I'm comparing them for. Pros and Cons between them would be a plus, considering some opinions are from speculation only. If you have any idea even better than I listed, pray tell them to me, shout them out. And why is Bosch so darned cheap?

Ignition Wire Set: Bosch vs NGK vs Denso vs MSD vs ...

Distributor Cap: Bosch vs Beck/Arnley vs Standard vs Airtex

Distributor Rotor: Bosch vs Beck/Arnley vs Japanese vs Airtex

Spark Plugs: NGK vs Denso

O2 Sensors: SNG vs NTK