Maril 555,
for a good MS you don't need a new platter. Regarding extensions on both tables, MS and TW you need to work with (if you like), building up a nice solution and having fun and improvements by bringing in modifications. The other option is a plug & play solution which both tables do not offer.
regarding isolation platforms: it is a must. I would also go for separate platforms for the motor(s) and the table. If you do this there are no vibrations on original MS brass arm bases.
for a good MS you don't need a new platter. Regarding extensions on both tables, MS and TW you need to work with (if you like), building up a nice solution and having fun and improvements by bringing in modifications. The other option is a plug & play solution which both tables do not offer.
regarding isolation platforms: it is a must. I would also go for separate platforms for the motor(s) and the table. If you do this there are no vibrations on original MS brass arm bases.