I use two 1.2M fiberglass ones from a company called RW Badland.
They made aerials for sowester and a couple of other people.
I bought direct and they only cost £25 ish each.
Upto date I have used them for 12 months and do give then some stick (ask anyone who has been out with me when its rough
) and no problems.
They even did me a special with 10M of cable for the same price as the standard 5M would not have been long enough.
Web site is www.badland.co.uk
but your need tio ring up and ask as Im not sure if these are on their web site.
They also apear to work better than the V Tronix RIB aerial as I have had reports that people can hear clear but not another RIB using the V Tronix RIB aerial, when we was both at the same location.