[TowerTalk] Vertical vs Beam

[John Geiger]

I have a question for the group about experiences with different antennas:

I was looking at a recent issue of CQ at the local bookstore tonight (it wasn't the April issue) and in a column dealing with semi stealth antennas, they mentioned that a 3/8 or 1/2 vertical will show comparable performance to a 2 element yagi.  Is this true?  Will such a vertical really do as good as a 2 element beam?  

Also, how would a roof mounted 1/4 wave vertical compare to a 2 element tribander at a low height-like 25 feet or so?

73s John AA5JG