I was looking at Rio's website today and found a new line they've just introduced very recently. Rio Perception. It will be interesting to get feedback on how it performs and which rods provide a nice match for it.
Unprecedented casting control and instantaneous feel. The trout line redefined.
From Rio's Website:
Our revolutionary RIO Perception floating trout line helps anglers connect with more fish than ever before. Built with ultra-low stretch ConnectCore Technology, Perception lines provide groundbreaking levels of sensitivity for intuitively better cast timing, easier line lift and sharp, precise mends. Lack of stretch also means enhanced detection of subtle takes and faster reaction time when setting the hook. Our exclusive SureFire color system (RIO’s uniquetri-color distance measure) improves casting accuracy by making it easy to gauge exact distances with a quick glance.
Unique three-color SureFire system ensures deadly accurate distance control
ConnectCore improves casting timing, hook set and mending
EasyID tag to quickly identify fly line"
Here's a link to the webpage if you want to look over the specs.
RIO Gold - Freshwater Fly Lines | RIO