As a further to the difference between the Zvezda & ICM models - there's not a lot to choose, as far as detail goes,
BUT where the Zvezda model wins, is in the tracks
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The link & length tracks come on sprues that join together to form a jig........................
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On which you can assemble the tracks
off the model - making it easier to paint tracks & roadwheels
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Quite the easiest form of track assembly in modelling today!
ps I have fear & loathing pf vinyl tracks!!!! ( why I haven't made many ICM tanks! )
Dave