I have no holes for an aerial so I want to get this right first time with a good quality aerial

http://www.justkampers.com/111-999-901- ... erial.html" onclick="window.open(this.href);return false;
http://www.justkampers.com/111-999-900- ... erial.html" onclick="window.open(this.href);return false;
Anyone got any suggestions on these or any other recommendations?
Thanks
Mark