Best MDF or board for MagicMirror frame?

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Hi all,
Quick question — what MDF or board material works best for MagicMirror frames and back panels? I’m looking for something stable, easy to cut, and paint-friendly.

I’ve seen people use standard MDF, moisture-resistant MDF, and plywood. Any recommendations from experience?

I’ve been browsing cut-to-size suppliers like https://mfcdirect.co.uk/
and noticed multiple MDF grades, which got me a bit unsure.

Thanks in advance!