@chowkwan et al
Just saw this thread. The Clockwork Orange Turntable - Cool
If you want to roughly and quickly find out if an ET 2 or 2.5 will work on a springy turntable.
Go get a soup can or similar object that weighs 408 gms - .9 lbs.
So I would just get a One pound object.
Two bubble levels. Place one on the turntable base (plinth) and one on the platter.
Check the Level of your turntable and your platter without any tonearm.
Are they both level ? If yes continue.
The ET 2 can be placed anywhere on the turntable, so start placing the 1 lb object on the turntable around the platter and see if your levelness goes out.
If you manage to keep it all level - the next step is to determine how finicky it is to keep level.
Are you ok to deal with this. The ET can be mounted anywhere on a turntable base/plinth as long as it tracks a straight line.
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re: Oracle and ET2
As above except now.
Start sliding the tonearm across and see if the bubble levels change.
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VPI TNT - was mentioned a few times. The TNT was designed for the ET2 when Harry and Bruce were collaborating; before Harry decided to start making his own tonearm. Just saying.
Hope this helps.