As you have a Porter plinth and Albert's former reference arm, the SME 312S, you may want to check out his latest comments on his system page about his new tonearm. It may change your bass performance.
I would also think you could add some superior isolation like a Vibraplane to your existing table and hear quite an improvement. This would cost you much less money and you could always use it under your next table to which Syntax could attest.
I would also think you could add some superior isolation like a Vibraplane to your existing table and hear quite an improvement. This would cost you much less money and you could always use it under your next table to which Syntax could attest.