Thanks for the replies. In response to the issue about actually protecting against surges, that isn't something I had previously thought of at all, but now that you mention it it seems important. Though I can't even recall the last time I ever had a surge that damaged anything and I've lived in this house for 15+ years so maybe we just don't get them?
The only reason I daisy chained them was because I wanted to keep the main one with everything else plugged into it hidden behind the TV, and then the one with only the amp closer to the front, so it's easier to reset it occasionally when needed (sometimes when the power goes out, the power to the amp gets messed up somehow and it has to be unplugged and plugged back in, so instead I just connected it to a new surge protector with an on/off switch so I wouldn't have to pull it out).
I'm not really familiar with power at all, so I apologize if anything I've asked should have been obvious.
Here's a little diagram: