I learned something in regard to LR last night that had been vexing me for ages.
When I pp I always want to map use of the dynamic range in the image and the most convenient way I did was to do all in LR but then transfer to PS for final output.....part of that was to check the levels and pull in the 'end stops' for highlights and shadows where needed.
But what I learned yesterday was that (and this assumes you are using Process 2012 not the earlier 2010) in develop mode you can make these corrections as follows:-
On both Highlights & Shadows press shift and double click on the word by the slider. It seems the algorithm analyses the histogram/file and adjusts the the setting to DRL setting ~ though in my quick tests depending on the image you have to keep an eye on and adjust to taste the clipping
Incidentally, the same 'trick' works for Exposure and Contrast sliders.
But as above in my other post, all images IMO need to be treated individually and to taste.....and obviously this method I surmise works best on raw files rather than JPEG.