pH level

What is a good pH level for soil?

Thanks

I keep mine pretty nutrual(sp)...say around 6-6.5

about 6.9 to 7.0

around here the soils r naturally slightly asidic 6.5 so i add horticultural lime at planting n again around july 1 they usually need it again in sept but the buds r more potent if stessed before harvest