Long Speaker cables

I recently moved my system from in between my speakers to an adjacent wall. I didn't expect the sound improvement I got. Problem is I had to do away with my 10 foot Synergistic Research Tesla Accelerator speaker cables and I'm using some bulk 10ga, Blue Jeans cable at present. Sounds good but I know there is room for improvement. Are there cables that are better suited for longer runs? I need 25 feet.