I bought some Event studio monitors about 5 years back that were ps8 studio monitors. "project studio" kind. Can't find them now. Do they not make them anymore? If so, where can I find them?

I have 2 already.

Would like to do surround sound, so I need more for good balance.

you're probably only likely to find those on Ebay at this point. They seem to be still around in some stores, but I'm pretty sure they were discontinued. Not at all a bad sounding monitor