I agree with Bob52R, for the money (and for all else !), TG Audio makes some of the best. Short of megabucks being spent on Shunyata or the like, the TG Audio SLVR (~$500) may be a steal ! I got a very rare one used, and one went for $410+ here on Audiogon a week or so ago.
But they have been getting rave reviews. As someone on Audio Asylum put it, they just make more of the best of the componenet come through. I have tried it on my Sony CD (mod'd NS500V from Ric at EVS), and also on my amp; in all spots it's fantastic.
The HSRi and HSRA Gen 2 could also be awesome deals at even less money.
Good luck !