Amazon. There is a sale on the Sheffield site, but most of what I got was much cheaper on Amazon (plus I got free shipping) and I was too lazy to split the order. A friend sent me a note and reminded me even the CDs are getting scarce; a lot of the ones I had thought of getting were out of stock on the Sheffield site. I had some gift certificates and finally decided to put them to good use. I was pondering putting them toward a new AVR, but decided more music made more sense (to me anyway).
I have a few original LPs but have not set up my turntable in ages. I have found the Sheffield CDs (and a few others) are useful for showing what CDs can sound like compared to some (most?) of the ones out there. I have been really dissappointed in some CDs of stuff I had on vinyl; in one case I think I have five different versions of the CD before finding a mix thought really does it justice. I think much of the bad CD sound is really bad remastering...
I also finally broke down and got the Return to Forever BD to watch/hear. Now if I can just get a weekend off and shoo everyone out of the media room for a while!