Mono recordings - two questions...

1) While I have been an analog fan since the 70's, I never ventured into mono recordings... from an audiophile perspective, how does one listen to mono recordings?  For example, does 'imaging/soundstage depth' matter and is it accomplished through a well-mic'd mono recording?  Obviously tonal balance, impact, resolution are all qualities that should shine through...

2) Would appreciate recommendations of well recorded MONO LP's -- recently bought a Julie London LP in mono it sounded surprisingly nice/natural... not so hot as many later stereo pop recordings...  my musical preference would be for vocals in pop, jazz and soul/r & b realms... in modern artists I would equate these to Diana Krall, Gregory Porter, Adele, Kurt Elling, Sam Smith, M Buble etc etc - 

Thanks in advance