RTings discusses the QN90A vs. QN90B vs. QN90C in the review
The Samsung QN90C/QN90CD QLED is a high-end 4k TV released in 2023, sitting below the Samsung QN95C QLED. It replaces the Samsung QN90B QLED in Samsung's lineup,...
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The whole point of Mini-LED's is to allow better control of local dimming, reducing the significance of native contrast ratio. So you don't need to care about the underlying panel tech (VA vs. IPS) as much, or at all. The QN90C has better color gamut and volume, better color accuracy, and better local dimming tech. And the fact that it now uses an ADS (IPS) panel means it has superior viewing angles over VA without the need for a
fucking wide-angle anti-reflective filter that smears reflections into rainbows that cover the entire screen, one of the biggest complaints about the 90A and 90B and other Mini-LED TV's of that era vs. the 90C. Other manufacturers who sell Mini-LED TV's have also given up on the
fucking rainbow reflections filters because everyone hated them, except Sony (sigh). For gamers, IPS panels also handle VRR better than VA, an inherent advantage of IPS tech.