Help me decide!

Nothing wrong with is good,

HUH!?

can you back it up with specifics? I've read many times a stock 340 is great for a 318 for street use, but why?

The 340 cam has larger duration specs and higher lifts.

on that logic, if 340 is good, 360 is better?
The 360's stock cam shaft is smaller, and the HP 360 cam shaft is the 340's cam.