this is arguably the biggest no-brainer question on the forum, quite simply the sirio,
be it performer 5000,hy power 4000 or megawatt 4000 will all simply blow it away, none will handle excessive power but on 400w or under i doubt you can do better,unless you buy one of those fancy audio gain antennas only sold in the states, only other antenna i know can outperform the sirios is a full size quarter wave whip.
be it performer 5000,hy power 4000 or megawatt 4000 will all simply blow it away, none will handle excessive power but on 400w or under i doubt you can do better,unless you buy one of those fancy audio gain antennas only sold in the states, only other antenna i know can outperform the sirios is a full size quarter wave whip.