Apart from Ursan , probably the W/Rt VWK Smite build, since it's so easy to do and gives great results (ecto'z). It does get a bit boring though, so I haven't been farming lately.
Click
probably my physical resistance D/Me smite farmer, its simple to use and safe, i would post the build, but i don't have Guild Wars on this laptop, but heres a youtube vid of it in action
http://youtube.com/watch?v=tEABZu6GNnM
Best one I've found for my Ranger since Turai's was nerfed.
I love this build aswell its just so damned quick and relatively easy to maintain not to mention the farming spot is pretty much right beside the outpost entrance. So it can be quickly farmed and effectively farmed.