I do everything in Photoshop (with Nik tools). Having said that, I probably use a tiny fraction of Photoshop abilities. Most of PP I do in Nik tools, but use ACR for lens correction, white balance and exposure and colour tweaking when necessary. I often use spot healing tool (simple but powerful) and clone stamp tool in PS to remove unwanted stuff. Shake reduction is sometimes useful to remove motion blur.
I don't understand Lightroom. Tried opening a picture in it once and it imported it to some weird file. I prefer to see my pictures in the file system, NEF and JPG files. So, gave up on Lightroom.