breather box vs. catch can, crankcase ventilation for my carbed /4 Options

[nebreitling]

does it matter?

i was either going to do a standard 3-port bugpack type box,

or tee everything off to a quart-sized catch can with mini filter.


what are the pros/cons for each?

i've heard that once oil leaves the heads to a breather box it should be considered dirty and not reused.

in either case, i'd prefer not to modify the carbs for vaccuum fittings.