One cheap mat I liked on many decks is the NAS Spacemat, which seems like a thinner version of the Funk one.
The Japanese didn't "listen" to their decks back then as we Linnies did, but more often than not, used careful measurements and technology to great effect on the better designs, getting good sound by engineering rather than tweaking an otherwise ok design. If the Pioneer mat has two grades of rubber on the mat, then some serious work would have gone into its design I suggest. The insides are solid and the plinth isn't an outer chipboard shell either. Perhaps its success is an accident, but I'm glad it's a goodie.
There should be enough pics of the R200 on the internet, but to show the basic similarities of the two, I can take and post pics of mine as it is, before I get it sorted.
P.S. I think this is another rare one in the UK, but the Sony PS8750 sounded really fine to me as well
