D5s are my first monitor and I was blown away by them. I'm sure there are better monitors for more $$$ but I feel these will always be in my setup to check my mixes. I love the stereo separation and have no complaints about how the low end translates. I usually only have electric bass so no real low end but like how things translate to other systems. I'm a true gear hound so am always looking for the next upgrade and contemplated the recent trade in offer up to the D8 but didn't feel like monitoring was where my system was most lacking. I could hear the preamp and room noise in my recordings so chose to upgrade my interface and next will be room treatment. The D5s got surprisingly loud on me the other day when I cranked the volume to listen to some hi-res music as I was doing other tasks outside of my mix position and I was pleasantly surprised...and I had to turn them down.

Sorry for no comparison info but definitely a whole hearted D5 recommendation!