I have always preferred the live versions of Portobello Belle to the album version, the live version is more free, the album version sounds restrained by comparison.
The outro of Romeo & Juliet is always beautiful, the album version is still great, but live it is taken to another level.
Private Investigations is better live too, Mark's guitar outro again is wonderful.
The Calypso version of So Far Away is amazing
Although the album version of You and Your Friend is really good, it's the live version where it really shines, Mark's playing is a lesson in the blues, and in touch and feeling on the guitar, Paul Franklin really adds to it too.
Are We In Trouble now is wonderful live, as is Rudiger.
Hill Farmer's Blues is a clear example of how Mark can make a great song on record, and then make it 10 times better live.
I have always loved, True Love Will Never Fade, Mark's playing live is sublime, and a rare example of Mark playing a solo with a plectrum, Richards lovely acoustic intro is great too.
An example of a song that sound great on studio, live and acoustic versions is, The Long Highway