Best performing vario I've used? Peschges VP-4E Nav. Not that it's an amazing vario, just that I haven't had a chance to spend much time with anything much more modern!

As is is I've been following this thread and others with interest as, if the pilots in my club decide to install PowerFLARM in all our gliders I'm pretty much going to have to update my vario to one which has the ability to display Flarm data (limited panel space and the desire to keep my mechanical vario and still have space for a transponder). So far the LX7007C basic combined with a PowerFLARM brick seems like the most likely option though I'm also considering many of the other setups talked about here. I despise using touch screens though so that kind of limits my options.

I'm trying not to think about the fact that by the time all this equipment is installed, wired and signed off I'll have just spent on my avionics a sum roughly equivalent to one quarter the likely market value of my glider!