i upgraded very recently from Soundsyle Z2 to Partington Super Dreadnaughts and i must say they are so worth the extra outlay. It really made my system come together.
if its any help i got mine from HiFix for £146. no problems and good communication when it was time for courier etc
Also i filled 3/4 with sand in the central column which seems to help - not sure i would add more than that though
Arcam FMJ CD36, Arcam FMJ A32, Neat Motive 3 on Partington SuperDreadnaught, Chord Epic Super Twin, Van Den Hul 'D-102 III' Connect, Sennheiser HD595 Phones, Little Dot MK III Headphone Amp, Tacima CS929, ClearerAudio Copperline Mains. Wadia Dock & V-Dac.