Interesting.
As to Beryl, my region agrees with Jackie and Bingley, with the distincion that the second syllable, unstressed, is probably the schma sound.

As to sterile, Bingley's version would sound completely odd and off here. Could this be the standard "atlantic divide" (geographically teleported, in Bingley's case )? Jackie's version ("stair") would pass here, but would sold faintly foreign. In that I'm assuming, an may well be mistaken, that Jackie would pronounce "stair" the same as a Chicagoan would.

Faldage's usual "bartleby" site give the first syllable of "sterile" per my version (and beryl the same), but the second syllable per Bingley's. Was the word ever spoken in the movie The Sterile Cookoo?