In a recent blog post Daniel refers to LMS as looking a little old fashioned, which in it's native skin it is.
In the last few months however a new 'Material' skin has been developed by Craig Drummond which brings it right up to date. I'd go as far as to say that it's now better than Rune, Volumio and Mood, and has the added advantage over them of the wealth of LMS plugins.
The main feature that lead me to LMS was multi-room playback and although I used the default skin initially, finding the Material skin was a revelation.
For details of the Material skin see Craig's Github page. https://github.com/CDrummond/lms-material