Yeah, I'm absolutely going for the big set, it's such a fascinating piece about how the entire thing began and ended up as a final album. Have to wait a little until I can afford it in a few days.
The album itself is pretty good, there's some really interesting pieces throughout. A really great combination of his more modern albums with opera and his old with a lot of interesting synth sounds and what not.
I wouldn't put it anywhere near his top, but it's really enjoyable overall!
Edit: Ordered the boxset and now the waiting game begins for whenever they'll actually deliver it. It's still not out, so curious when they'll get around to releasing it!