BEST LINE CONDITIONER UNDER $600

I have been waiting and waiting to pick up a used Blue Circle MR 1200, but so far, nada... i am reaching the end of my patience... does anyone have other suggestions for a good power/line conditioner (new or used) in that general price range (UNDER $600). This is for AUDIO use only on a mainly ANALOG system, need at least 6 jacks, and prefer an ACTIVE unit with an ON/OFF switch. thanks to anyone with any advice.