I would prefer legs than table. It is more convenient to work under the
magnet without touching the vibration-isolation system based on legs. When
you want to tune the probe or change the probe, with table it is almost
impossible not to lean on the table which disturbs the balance and gives
you an insecure feeling because the magnet is swaying around. Of course
you can also turn off the air pressure for the isolation table before
doing anything under the magnet. Leg system usually has only three legs
well separately from each other and there is enough room between two
legs, and the original magnet stand is usually small enough that you can
avoid leaning on it.
As far as I understand, the cost of a table is about the same as that of
a set of legs (used to be much higher).
Cheers,
Shaw