I've enjoyed all their albums, but Sirens is my favorite and I think it gets some unnecessary flak due to the Victory connection. I probably like Michaelangelo so much due to it being about one of my favorite poems, but I've always felt it was the standout track on that record. Good stuff.
There's no way I could rank Bayside's albums, they're all incredibly solid and they're one of the most consistent bands around. That acoustic Talking of Michelangelo was amazing, it translated perfectly live. Maybe I'll see it for myself some day, but I'm not holding my breath haha