If I may add to Flg2001's question about the 507. The issue with this tonearm is mostly related to mass distribution once the arm is mounted on the turntable. The arm itself is 3 lbs, which is something to factor in when considering matching it with some lightweight turntables, suspended or not.
A high-mass turntable design, suspended or not, should be able to accommodate the 3 lbs of the arm without much unbalancing of the mass distribution of the turntable. This is because the extra mass added is a small percentage of the total mass of the turntable.
Conversely, if such a weight (3 lbs) is added to a light turntable, the extra mass will be a large percentage of the total weight of the table and this will certainly tax one side of the structure of the turntable, eventually changing its resonance.
Of course, my comments are general in nature and they don't address any specific design of turntable. An engineer designing a light turntable could foresee the installation of a heavier arm and design the mass distribution and structural supports accordingly.
Regards,
iSanchez