All the SR-303/404 drivers had the red rings, no matter what headphones they were used in. 4070, SR-SC1 and 404LE
As for the 007Mk2.9, they still sound awesome and easily trump the 009 with just the ports plugged. I just prefer the meatier sound of the 007's as the 009 can be a bit thin at times, even the new ones. The 007mk2.9 isn't quite as smooth as the Mk1 but it just gets out of the way better than the 009. Equal or even better detail retrieval than the 009 and the bass is the best anywhere, it's just perfect - tight yet tuneful. The 009 can't compete here as it's bass is... well how to be diplomatic here... lacking. Yeah... let's go with lacking.
I've been spending a lot of time on the KGST lately and here the 007Mk2.9 just fits perfectly. Really shows off what circuit can do and why it's such a favorite of mine.