I'm going to try a whip aerial as after putting two servos in the tail of my latest plane my range has decreased drastically. Down to 35 paces

With the aerial outside I got 45 paces, which I still think is marginal so I'm going this route.
Anyone tried these? I know Patrick Drack of Switzerland uses them but I've not seen many others. Any dos and don’ts? Any recommendations as to which are the best etc etc and where else I can buy them?
I was thinking of these ones:
http://www.alshobbiesstore.com/cgi-b...%23a1633#a1633
Any info much appreciated.
Angus