There was an interesting article in the NYTimes about her a couple weeks ago. Apparently, rather than living the life of a diva, she is very 'downtown,' hangs in local clubs without fanfare, and is a jeans and t-shirt kinda gal. (Or her publicist is good enough to create that impression).
It is the constant dilemma though, isn't it? Great sonics = very lackluster performances; brilliant performances on mediocre recordings.
I have her big hit album on vinyl and though it has nice sonics, and she has a good voice, I rarely play it.
On the other hand, most of my Etta James records are not extraordinary recordings, as such, but I play those much more often (and take the trouble to see her in concert).
White chicks without soul- hmmm, Linda Rondstat, Mariah Carey;
Joplin- the stuff with Big Brother & Co. is still amazing to me.