When playing live, I like to have a beginning and an end to solos worked out, but the middle never sounds the same twice. I tend to get bored playing the same solo over and over, so I try to reflect what's in my heart and head at that moment.
If I'm nervous, I'll slow down a bit and focus more on phrasing. If I'm pumped, then I'll cut loose, but with a mind to fit the song.
Recording is an entrirely different story... I tend to get really critical about my playing. I think I have studioitis.
Guitars:
Fender 2006 MIM Fender Stratocaster HSS in 3TS
Ibanez RG 570 with a bridge Invader
ESP M II Deluxe with a Tune-o-Matic bridge
Eleanor, the magical, mystical Road Worn wonder Tele
Blackstar HT Club 40