Dolby uses their Atmos system, while IMAX still uses their own audio format. ... then your choice between IMAXand the standard PLF offering (e.g.RPX 3D) is a toss-up. RPX will be easier on the eyes, but the picture will be significantly less bright compared to IMAX 3D. Hopefully this helps
Regal Premium Experience- refers to the sound quality, it's supposed to be great.
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