For me it's Van's live album 'It's Too Late to Stop Now' with his fantastic Caledonia Soul Orchestra.
https://www.youtube.com/watch?v=aC15tA4bluU&list=RDaC15tA4bluU&start_radio=1
https://www.youtube.com/watch?v=FfAm29qsYAQ&list=RDFfAm29qsYAQ&start_radio=1
There is no better version of Cyprus Avenue than the one on this album. It's ecstatic, like you're literally climbing the stairs to heaven.