I use Pulex because its all I could get hold off locally and although I can now order on-line I still buy it but I`ve considered trying others. I don`t have a problem with it but I know what Paul meant. When you add a bit too much Fairy the rubber can get full of suds and it needs a wipe but I suppose this can happen with Ettore and Unger.
I have found that I need to change the Pulex soft rubber more often though. It doesn`t seem to last as long.