Wireless Extension Cables

I've just been weighing up my options and if anyone is interested in D-Link gear - their extension cables they use in products such as ANT24-CB09N (10 meters) have the following specifications:

HDF 400
Low Loss
50 Ohm
Coaxial Cable
Commate/Pewc 8D
Dbi loss per metre is 0.265

I'm not sure of the branding, but one wholesaler I've looked at sells cable with a loss of 0.65dBi per metre, which would be a real killer!