I tried some out and liked them, but I ended up getting a Axiom M22ti's and QS8's. The Orbs look really nice and have generally good sound quality.
Their highs get a little harsh at high volumes in larger rooms,
and they also really need a *good* subwoofer that can reach
high enough frequency-wise. In the end, I decided that I liked
the overall sound of physically larger speakers that had more mid-bass
response and which weren't completely reliant on a subwoofer.
However, if you really want a sub/sat system, they seem
like a reasonable option. Plus, they are really pretty.