Impurva is apparently no worse than Sucuri. I'm not sure what threshhold of Tor blocking is acceptible. Perhaps we should consider <5% acceptible since it would likely reflect figures of genuinely malicious Tor users.
The eQualitie site itself (equalit.ie) was a CloudFlare site. Very recently it's not. We should pay attention in case their current state is temporary, but for the moment they seem decent.