Roderigo, beviam!... Inaffia l'ugola; Otello; Tito Gobbi (with score) 

You should also listen to Eugenio Giraldoni, the first Scarpia. He performs the most perfect trills I've ever heard from a baritone in Roderigo's death aria in Don Carlo: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qgQu1peInj4.html&si=EnSIkaIECMiOmarE&t=3m44s Enrico Molinari also had pretty good fioritura, which you can hear in his renditions of "Cruda, funesta smania", "Dunque io son" and through his performances as Di Luna in "Il Trovatore".

I've listened to it twice, and I'm still looking for deficiencies, either in execution or interpretation. Would you provide technical analysis to support your opinion?