RahXephon is a sci-fi anime with an intriguing story. Editorial review does a good job for summarizing the overall scenerio, so there is no need to lengthen my review. RahXephon resembles Neon Genesis Evangelion in many respects but it doesn't have the drawbacks of Evangelion that I mentioned in my review of its complete set. If you enjoy science-fiction books or movies having interesting and intriguing subjects, you will enjoy RahXephon as much as I do. If you need an example from anime to make your decision, I can say that the ones liked Gasaraki will probably like RahXephon, too.
Video and audio quality of this DVD edition is very good. Most anime fans dislike dubbing and prefer to watch Japanese sound with English subtitles. However, subtitles are not that good. I found out that listening an important conversation, which you couldn't understand it at first, for a second time is much more efficient than figuring out what happened from subtitles. You should notice that there are actually two English subtitles. First subtitle is the regular one and the second one is similar to the "Pill" option of Akira, it only translates Japanese words on the video and background conversation on scenes such as a news heard from a TV. This second English subtitle is benefical to turn on.
Leaflets on DVD's are very wellcome and useful. There are fully coloured drawings of mechas and persons together with a brief information. The leaflet of this first volume also includes short interviews with Japanese cast but no translation notes this time. I hope they will reappear in the next volumes. Production sketches, opening and closing animations are there again in the extras, as well as ADV previews. The last extra is the second interview with English cast. Voice actors of Mishima, Isshiki and Sayoko answer a few questions, respectively. The questions are cliche again but not completely same the first interview. Some questions are the same and some are different. This interview is somewhat poorer than the first one, but it's OK.
Fourth volume has four episodes which reveal much more secrets than the previous volumes. I, as a science fiction fan, give five stars to this volume as well as the other three and I am looking forward for the rest.