Can't add much more that wasn't said before. I bought a 10 footer (Orvis Clearwater) for nymph fishing, but found that in nice open water it cast perfectly well for dry fly fishing. The 10 footer became my go to length for regular trout fishing as it is far superior for nymphy/streamer applications and marginally less efficient for dry fly fishing. An 8 foot dry fly rod, however, can't roll cast or nymph nearly as well as the 10 footer.