I'm somewhat a novice when it comes to that upgrade. Did braided brake hoses on my Fireblade (Honda CBR 900RR) but afterwards i didn't think it was worth the money. Never noticed *that* much of a difference. Perhaps i didn't drive my bike to the fullest? How is the difference in a viper?
The rubber lines expand a bit and make the brake pedal a bit mushey and the braded lines are a lot safer if you hit something in the road they are not likly to rip off from the brake caliper and they don't crack.