Pick Grand if the ceiling matters to you. 10,000x beats 7,500x, the Gold and Diamond wheel tiers give the feature ladder more headroom, and the 7,776-ways grid is livelier spin to spin. For a player who already likes this series and simply wants the biggest version of it, Grand is the obvious choice.
Pick the base game if you want the version the record was set on and the one with the longer track record online. The $22.4 million DraftKings win in November 2025 came from the base game (via an operator-side progressive, not the in-game jackpots), and the base game's fixed jackpot table is fully published, which Grand's isn't yet.
The honest con: critics weren't impressed. bigwinboard gave Grand 5/10 and framed it as an extension rather than a new release, and it's hard to argue. Grand doesn't fix the things lukewarm reviewers already flagged in the base game, such as the tiny base-game pays and the reliance on rare features. It just makes the same game larger. If the original didn't click for you, a bigger grid won't change that.
The practical answer for most players: try both demos, then follow whichever version's rhythm you preferred. The difference is smaller than the marketing suggests.