The best deal I've seen is carried at all of our local Walmarts. It's called Malin Hard Wire and it comes in 42 foot lengths and in various diameters. I prefer the .014 because it is extremely thin, yet still has a 42 lb. breaking strength. That might not sound very strong, but I tested it by placing a snare loop around my ankle and the other end around a fence post and it took me a while to get out. If it would've been around my neck, I'd still be there. It's available in silver or coffee colors; either is fine.

Be careful handling this stuff, I've run a few pieces almost completely through my hands/fingers. It's as sharp as a needle if cut on any angle.
Hope this helps, George