Yesterday, I heard a good bit of a Liceu (Barcelona) production of Simon Boccanegra over the intertubes, via Catalunya Musica; the conducting and most of the singing were okay, not great, with the exception of soprano Krassimira Stoyanova. In what I heard of her, she had what it takes. This did not include Amelia's entrance aria, a tough five minutes for any soprano. I would like to hear her at SF some day.
This Sunday, January 4, you can catch this fall's SFO Boccanegra on KDFC at 8 p.m. The singing ranged from good to outstanding, and Runnicles was ON, so it's highly recommended.