http://riftupgrades.com/roguedps/Riftupgrades isn't terrible, pretty sure it won't ever be completed, but was up to date for rogues last time I checked...
Worst case scenario, it's a learning tool that you can use to compare to other sites.
You can also change how certain stats are weighed in the settings menu.
The Add-on NKAdvisor can probably help with what you are looking for as well, basically allows for the same thing, but you can access it in game.
http://www.riftui.com/downloads/info121-nkAdvisor.html