Least Losses: Long speaker cable vs. Long Interconnect?

Hi, I have such a clutter of audio gear around the TV I am contemplating moving one of my surround amps to the back of the room. This would place it near the rear speakers and give it the ventilation it needs. My question is whether I will suffer undue signal loss by having a long interconnect run (4-5 meters) as opposed to a long speaker cable run? I've been told that longer speaker runs are more desireable because they carry a high current as opposed to the voltage-based interconnects (more susceptible to signal loss). Any help would be appreaciated, especially with brands (will spend the cash if necessary). Thanks.