I have a bunch of Bummis medium covers, 1 Thirsties medium cover and a few Thirsties duo covers, size 2.
I also have a GroBaby stash and SoftBums...
(Photos are uploading...I'll add them when they are done!)
Thirsties Covers:
Bummis Covers:
GroBaby Stuff:

(One of the Kiwi covers has busted elastic in the legs...don't know why that happened!)

Several soakers have stains about half have none. I haven't tried sunning at all.
SoftBums Stuff:

(LOOOVED these diapers!)