Aside from gkweb's site are there any other reliable testers?

Gkweb have done a good job of giving us some kind of info to compare capabilities or ranking of outbound protections of different firewalls, at least, we have something to look up to. I thank him for that, for someone who has great courage of doing job like this. I hope there's no pressure or "harassments" before he released the results. I hope there's none. But I was wondering if there are also some other reliable firewall leaktesters out there just like him that can we also check into, I mean, firewallleaktester.com is already good enough for many, I trust it, but still... it could be also much better if we can also check the results of "other testers" to compare this. That maybe results are not the same...

Maybe some of you have links that we can check into? or is it only gkweb that can really do this kind of testing?