I'm surprised with the popularity of the piss poor antron 99 that this antenna by sirio hasn't drawn more interest.if it does as it claims (BIG IF) it would seem to be a natural successor to the A99 as a simple plug and play antenna.
they seem to have covered all the things the A99 lacks,(low radiation angle hmmm ??) built in rf choke,balanced feedpoint (hmmm) ,joining with hose clamps as opposed too screwthreads that wear down.
a few of the gain claims against a 5/8 wave seem unrealistic,but i never say never,and of late sirio have learned the folly of exaggerating gain claims will easily be found out in use and have made sensible gain claims for all their other antennas,so why should this one be any different,another thing to note is sirio is one of the few companies with proper test equipment and shielded anechoic chamber to test antennas.
certainly looks interesting if it meets sirio's claims.i can invisage plenty getting f@cked up mind by people not reading the instructions right and the coax radiator being strung up too tight within it and breaking as soon as high winds start to flex the antenna.water ingress over time may become seriously problematic too.