Ok got out and tested some roll casts, pick ups, double hauls and everything but drifting/mending due to the slack water I fished. First, I was concerned a full (4 -> 5) over line may be too much (I know some good suggestions for 4 -> 4.5 were offered) but it is bliss! The lil 490 seems to come alive with quick, precise casts - as if it had been waiting for a 5wt line. So far, it seems the best setup I've gone with. Second, the perception line sublimely improves all aspects of casting (I guess) due to lack of stretch. The result is better response and control, for me anyhow. Having no fish on the new setup, it's probably only fitting to do that on the Skagit, where the subtle improvements in mending, drifting, hook-ups and the like are highly anticipated based on my testing. The color system is alright, changing at 20 and 37 feet, and certainly made me aware of distance yet wasn't a selling feature for me. Overall, at this point, I'm very pleased with both the idea to over line and the choice of a low-stretch line. Thanks for all the help - this set- up suits my needs perfectly