Interesting point of view. To me, Turn was more like the transitional album between two sets of twins as I've always considered Eve & Pyramid and Eye & Ammonia as the albums that seemed really cut from the same cloth. The songs Silence and I and Ammonia Avenue (both sung by The Zombies' Colin Blunstone) are really like part 1 & 2 of the same song. Eye & Ammonia also feature the similar long melodic Ian Bairnson guitar solos (which I've always loved). I also love Don't Answer Me which could have been written by Roy Orbison (imagine the song a little slower now if you will and with Roy's voice). Pure Pop bliss!
I for one was pleasantly surprised to hear that this was the upcoming 5.1 release and I'm thrilled to bits. I have to admit that Eve and Ammonia are my two favourite albums by the Project.