As for Gary himself I prefer his blues ballads - I'm probably gonna get yelled at but to me Still Got The Blues is a brilliant song.
Yes, I was discussing G.M. some years ago with a workmate - and we both thought that Still Got The Blues was his 'best' solo at the time. It is well structured, full of great technique, well paced and emotive / relevant to the song .
In a much more minimalistic way, his original 'Still In Love With You " solo on the Thin Lizzy 'Nightlife' album was an understated gem. The ( now much more famous ) epic live version being of course much more elaborate. On the " Nightlife" original - it was just Gary, Brian Downey, and Phil Lynott / Frankie Miller sharing vocals - a very good 'one guitar , two voices' rendering. :)