LX S80 or ERA 80?

What are then many details that the ERA has that are more advantageous than S80/S100?

Maybe I was a bit too enthousiastic when referring to the ERA having an edge in "many details". S100 and ERA are very very similar devices both covering an almost identical feature set. I believe the only real feature innovations of the ERA are Wifi and the SPOT option.

I personally put a lot of emphasis on visual appearance and feel that the ERA has set a new benchmark in terms of providing the most important information at a glans. In contrast I feel that the S100 tends too put to much information on the small screen and does not make good use of color coding to help quick perception of the information provided. The S100 does allow cleaning up the view with some configuration - but within limits.

In any case, this is a very subjective perspective. There are plenty of device screenshots available, allowing you to form an own opinion concerning the visual representation.