Have you considered IsoAcoustics ISO-pucks? They are the professional version of their hifi isolation supports and are covered by the same patent as the Orea and Gaia isolation supports. Each Iso-puck will support 20 lb so four will easily handle a DSP5200SE and they cost £44 per pair! The downside is that the speaker just sits on them, but the do 'stick' to the speaker base by suction, and they are not as blingy as Gaias or Oreas.
I have them under my 808v6 and the improvement in SQ is fantastic, I also use the mini pucks under my TT with similar improvement in SQ. Unfortunately, as I'm on a carpeted floor, I can't use them on my 5200SEs, but I'm working on it.
You can find out more about the
Iso-puck here.