Infinity "Sigma" Speaker

Has anyone owned or recently heard the Infinity Sigma speaker?? Recently, there seems to be several used postings for it and other "classic" Infinity speakers on the audio webs. I have never heard them,but have seen several pix of them, and they are beautifully constructed. Is this still a viable speaker compared to some other newer hi-end speakers?? (I want to avoid boomy bass and am seeking for holograpic soundstaging) And...can you still get service parts for them?? All opinions appreciated!! Thank you, Jimbo