I think it is as good as the g5rv.  The main attraction for me was it 
presents a good load across all bands so my solid state amp loves it.  I 
don't have an external tuner, so the g5rv didn't work all that well with 
the amp.  I have mine up as an inverted v.  It is a folded dipole with 
spreaders that space the wires about 2 feet or more apart.  In the center 
at the bottom is a balun where the feed point attaches.  Directly above 
this at the center of the top wire is another unknown plastic thing, I 
think a resister.  They do sell a special mounting insolater but I just 
used pvc pipe to separate these parts and keep metal away from the wires. 
Below the feed point I attached the pvc to my mast.  The ends of mine are 
only about 4 or 5 feet above the ground.  It doesn't work worth a damn on 
160, but very well on other bands.  I also have a gap verticle up and some 
times one antenna is better and some times the other.  The wire is, as one 
would expect, a bit quieter.
73s
Butch Bussen
wa0vjr