To be honest, most of the other libraries are of zero interest to me.
I'm trying to be good and only install stuff that I'm likely to use (probably a futile endeavour). Even though I barely spend any money on plug-ins, I still have a hard drive littered with freebies and mega-cheap deals* that no matter how good or bad they are, I'm never going to use.
* For which this place is, in no small part, responsible. As well as those newsletters that keep arriving in my inbox.