As from this week I have both - and one set will have to go.
I've been using the Audiostatic Wings (full range electrostatic) for about a year and recently added a Final S200 sub to fill out the bottom end.
The Wings are probably the most transparent speaker I've yet heard (even more so than MLs and Quads I've heard) but do need a bit of power. I have driven them with a Plinius SA50 (suprisingly good despite just 50 watts), A pair of Parasound JC1s (they really liked the extra power) and now a Tact TDA 2200 which has the most open and detailed sound yet.
But the Wings without a sub can sound too thin, expecially on rock music. The sub helped balance things out a bit but integration between the two is an ever ongoing task !
I'm possibly replacing with the Prodigys once I get them set up to provide a more coherent and dynamic sound, though I may miss that extra bit of transparency.
If you like "unplugged" sort of music the Audiostatics can sound sublime (and are also a lot easier to position than big MLs with their small footprint.