I am surprised to say we love the Kobo Libra Colour! I thought it would be as bad as the BOOX Mini Tab C I had, nasty ghosting and blurry black text. I almost always have my GlowLight turned on for any E-reader, usually 50-90% because I need it for my vision. With the Kobo Libra Colour, in a dark room with no light, 3-6% light is acceptable. In a normal living room with 60 watt lamps, I need it at 100% but the battery doesn't even drain any faster than my 3rd Gen Oasis or old NOOK GlowLight 4s did!
Black and white text looks like 200 PPI when light is at 100% with Natural Light turned on, but very acceptable. Light completely off is impossible to read for me even under a lamp because screen is dark gray, even though 300 PPI text. Need to test outside without GlowLight on.
Covers and non-fiction history book illustrations of maps and historical figure paintings look great, reminding me of my comics collection from the 1990s!
I wish I could get OverDrive to work properly for library comics though. If the title isn't exactly the same on Kobo store, it doesn't sync to my device, which was one of the reasons we got it.