Well seeds will yield more grow faster and have more vigor but count on 1/2 being male...as you know the advantage of clones are speed and you know its gonna be female.

If I had some feminized seeds I would use them every time...just have em ready to go when you need to pop them into flower. It takes much longer from seed than clone but I think the yield is worth it. I seem to remember that seeds have a higher THC % also but im not sure about that one.

Clones are much easier to populate your garden then with seeds.