The content of the 2nd edition Planescape books themself is ecellent, so this review will be purely about how the reproduced books look, both in print and PDF. I first reviewed Planes of Conflict books, so I'll refer to those at points.
Compared to Planes of Conflict, the scan and print are both darker this time around, so all included books are much easier to read. But there are still parts where text and dark bits get pretty light, making for hard reading. Thankfully those bits are in minority this time around.
But again, art/page spacing could be better. White borders on full page pictures are common, and images that should start from bleed area of each page just start a bit from the edge.
This time the maps and their backs don't have zoomed in versions included, making the book quite a bit smaller. Thankfully there's not as much text in the Chaos maps, and what there is is actually quite readable at the size the text is in.
Same improvements as Planes of Conflict apply here. Light levels of the pages should be re-leveled and sizing/art should be manually adjusted.
If these are fixed, I'll gladly rebuy the book as Premium print. Yeah, I guess I'm a sucker.