If I process a RAW-Image in Lightroom, I will get more noise than from a in-camera-processed (or from DPP) image. Which settings do you recommend to get the same noise reduction in Lightroom like from Canon? And how much would you sharpen?
I won't go into nr/sharpening details, but there are good tutorials around and I'd advise you look at this (yes, it's commercial, but well worth it): http://www.lynda.com/Lightroom-tutorials/Noise-Reduction-Sharpening-Lightroom-Photoshop/142976-2.html
As for Lightroom, my advice is to use this plugin and figure out good settings with a tradeoff noise/detail you personally like and that's adequate for your purpose (screen, print, ...). The good thing about this plugin is that it takes into consideration if you have raised the exposure which a simple filter for iso values will miss: http://regex.info/blog/lightroom-goodies/bulk-develop