I reckon Shane's best song after the Pogues was Aisling, and I think the best Pogues song after Shane was Living in A world Without her or maybe Tuesday Morning.
I may be a bit biased but Lonesome Highway wins for me.. it was my wedding song!! As for the Pogues after Shane.. I go with 2 unreleased tracks - Fisherman or Hot Asphalt.. I think they are both great songs - wonder why they weren't released??