Can't offer my own comparisons, but take a look at the info here:
http://www.soundfountain.com/amb/sp10plinth.html
No affiliation, blah, blah, blah.
Jeff
http://www.soundfountain.com/amb/sp10plinth.html
No affiliation, blah, blah, blah.
Jeff
Replace my Technics SH-10B3 Obsidian SP10 base?