Quieter, but less dynamic sounding than the glass. A change in sound rather than an upgrade. But lets face it, it looks really cool.
Groove Tracer Machined Sub-Platter
Easily the best Rega upgrade so far!
Michell Engineering Technoweight
modest improvement
Graham Slee GramAmp 2 SE
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PS Audio DigitalLink III
still rediscovering my CD collection. Will be feeding it through the USB of my iMac shortly.
Naim Audio NAIT XS 2
I've been running this for a couple years. At first it had that "hi-fi" sound (in the bad way), but has since warmed and opened up. Comparable to the Cyrus II it replaced in character, but with better dynamic contrast.
Von Schweikert Audio VR 1
These always reveal any changes made upstream. I don't think I'll ever get rid of these, but I might try the Reference Audio mod.
Transparent The Link
the RCA plugs are a bit too tight, in my opinion
Transparent The Wave
Hard to say, I bought these at the same time I got the Naim
Very sharp system -- it puts the setup I had in grad school to shame. I'm guessing that you mostly listen to vinyl? If you have a significant cd collection, there are great deals to be had on used players these days. A Rega or Naim player would be a great addition.