What audio expos are worth going to?

On the off-chance that expos, like CES actually happen in person this year and next, I was wondering if anyone has attended particularly great, annual audio expos. I've never been to any and with the lack of audio stores where I live, I feel like I've been living in a vacuum. So, I'm anxious to hear a lot of the equipment discussed in this forum. I'm in CA but given the audience, the expos could be anywhere. And conversely, did you ever attend an expo that you would not recommend?

Thanks.