I have two rods, one 11' long and one slightly longer, that take 400gr heads. I use #20 ridge running lines on both. I get all the distance I need for practical fishing, and I find the ridge running line handles well and rarely tangles.
I had a #30 ridge running line that I used on one of the rods when I first got it, and it also cast well. The maximum distance I could cast was probably a bit less with the #30 ridge, but not enough to have any practical effect on my fishing.
One possible drawback to the ridge running line is that it seems to pick up a bit of water as you strip it in. This can be a problem if you are fishing in air temperatures well below freezing, as this water quickly turns to ice in your guides. But Airflo makes a 'ridgeless', supple, running line that worked well for me last winter.
I have tried mono running line on the 11' rod, and while I can cast a bit farther with mono, maximum casting distance is not generally what I'm after in my trout fishing, and the ridge line seems to handle better for me.
Last edited by Sunkfly; 08-05-2013 at 08:30 AM.