The one that sounded the best to me was the Red Witch Ivy Distortion, which is good because it is cheap! It is in part 3 I think.
But yeah I've found that distortion especially only sounds good with clean amps. Not with high gain amps.
I note that they recorded those clips with a Laney Lionheart, which is a warm sounding Class A amp. My SG Junior, for example, sounded completely different through my friend's Laney Lionheart.
As an aside, he found that the Lionheart sounded extremely 'toppy' through my Orange PPC412 and kept turning his treble down. Seems that the LH has a lot of top end that must be subdued by the 212 cabinet it comes with.