Ray-Ban vs Oakley sunglasses - frame sizing (brown, thin, women)

[Mary2014]

For the first time I will be selecting non prescription sunglasses after 12 months of complications that are finally resolving after cataract surgeries. (Complications were the result of RK eye surgery 27 years ago.) These sunglasses are mostly for driving.

Since I can't go out to try on non prescription sunglasses I ordered 3 pair of inexpensive sunglasses on Amazon to decide between Brown (amber) or Grey color. Also I will evaluate the shape of the different lenses and the style of the temple pieces. The temple pieces must be thin to allow me to slide the temple pieces on and off easily under my hearing aids.

I suspect that the only style that will accommodate my hearing aids is an aviator style frame/ temple pieces with my preferred rectangular shape lenses.

The problem I am running into is that rectangular lenses in aviator style frames all seem to be listed under sunglasses for men. Ray-Ban has them available in "large" while Oakley has a large size as well, but, based upon my present frames Oakley considers me a "standard". My regular prescription glasses frame that fits well is 51-19-140. This is very close to the one frame Ray-Ban calls large.

So, my question for anyone who has bought Ray-Ban and/or Oakley sunglasses (particularly aviator style) do the Ray-Ban style in large actually run smaller than an Oakley style in large?

I like some of the new technology of the Oakley sunglasses, but, the lens shape and frame styles for women is very limited in standard size.