Welcome to the forum.

This is a frequent question each year when new versions are released. In my opinion, you will hear the difference if you have good ears, good monitors, a good listening environment, and all tracks in the mix are CD-quality. If any of these are missing, you will not likely hear much difference (such as listening in a car, or making MP3s as your final product).

Some instruments show the difference more than others, such as solo acoustic guitar, acoustic piano, and certain drum sounds, particularly cymbals.

The more instruments in the mix, the more there may be a noticeable difference as 'noise' adds up in a mix. This may apply more to RealBand, where you may have many more tracks than in BIAB.

The audiophile version will cost you more for annual updates.

The difference is less now than it was several years ago, before the use of the Elastique algorithm.

I've noticed over the years that my fellow users may have different opinions than mine on your question. Bottom line, my recommendation is to get the audiophile version if your intent is to produce commercial recordings.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.