I use LX 9000 and V9 with no other Flarm display and I find that it gives me all the details that I need and I have no use for a separate Flarm display.

I did turn off the Flarm voice warnings because as someone else mentioned, they were a little long and I found they interfered with the vario tones.

I have been flying with this setup since 2012 and much prefer it to the Butterfly display that is installed in all of my club's gliders.