I have the Windfeld in my current analog rig (Merrill-Scillia MS21, Tri-Planar arm, custom phono stage). The sound is the best I have had. I also had the SPU Synergy and the Jubilee in the same system.
I would characterize their relative sonic personalities as follows:
- SPU Synergy: full body, warm, weighty, not quite a nimble and light, kind of like Angelina Jolie.
- Jubilee: lighter, more detailed, more ethereal, more air, not as weighty as the SPU, kind of like Katie Holmes.
- Windfeld: more refined than the other 2, more balanced (not tipped toward highs or lows), more timber-accurate (musical instruments sound real), more accurate soundstage presentation, kind of like Catherine Zeta-Jones.
As Michael Fremer said, the Windfeld does not have any obvious flaws. The best way to describe it is very balanced. But if you prefer the sound of the SPU then it may sound light weight to you.
You will need a good phono stage to get the most out of the Windfeld, but it is definitely the best I have heard in ANY system. For my taste anyway.
Which one you like will depend on if you are like Brad Pitt, Tom Cruise, or Michael Douglas. :-)