The texture for Illustration Rares and Special Illustration Rares was better in Japan, and while that has since changed for the better in English sets, going back to older sets means you'll have even better-looking cards when you buy Japanese boxes
The other Infinity Stones are expected to make their cardboard debuts in later Marvel sets like Marvel Super Heroes, likely along with some payoff for assembling them all, so any players with the means to do so are picking up their copies of The Soul Stone now while its relatively inexpensive
For tournament play at lower cost, the English set works fine
I played it for a long stretch, first as a two-of, then one, and then zero
But if I follow the feedback I get during the supervision step, the subjects suddenly look like themselves
Sword of Forge and FrontierSword of Forge and Frontier, Sword of Light and ShadowSword of Light and Shadow and Zephyr BootsZephyr Boots can help while holding the added benefit of triggering off both of Cyans strikes
