I use monofil fishing line (2 to 3 pound test) and also stainless steel wire for the shorter "runs" such as flight control cables. Like Chris, I like the added strength and support that mono provides. Everyone has their favorite, most seem to employ more then one technique, and quite honestly most work with great results. I'd recommend you experiment a bit, and keep an open mind.
Beautiful Zep!
Cheers,
Lance