I've always been a QO fan. I've never seen one go bad. They are built tough and reliable. However, to me it feels like they are starting to show their age and limitations on what they can do with a 1/2 wide slot. As other's have pointed out, they get around this by making the electronic breakers longer, which creates other issues.
As far as boycotting SqD because of their push to SPDs (I didn't know they were the one...), I don't have anything except anecdotle evidence, but since starting to install SPDs, I feel like I'm seeing less failures of equipment (ie, GFCIs).
For example, at my camping property, I was getting at least 1 failure of something after every electrical storm, a GFCI, a motion light, etc, etc. Since installing an SPD there, I haven't had any failures whatsoever.
Lately I've been installing Leviton panels. I know they are shunned by many old crotchity electricians here, but they are reasonably priced, haven't failed me, and they've been available throughout this Covid Crap, without price hikes.