Frank Sinatra...

I'm not a huge fan, but once in a while i do like to listen to Ol' blue eyes. Years ago i gave away an excellent cd, both interms of music content and recording, and for the life of me cannot recall the title.
Anyway, if you had to buy only one or two of his work, and want to get the best in terms of music content as well as recording, which would they be?

Many thanks guys, this will help me narrow down my search.
Bal

There was a 4CD box set from waaaaaaay back... quite a comprehensive survey with decent mastering... Black portfolio type case, Frank in white, Sinatra in red lettering or vice versa, I can't remember...