I have had:
Bummis Nylon Whisper pants - these don't leak (so long as they are not on for hours on end), don't leave red marks because of the soft bindings, and fit over any diaper.I have had white but I believe you can find fun prints as well, and they are inexpensive to boot. Not bad for a $5.00 cover! I'm thinking about getting more.
Bummis Super Snaps - A big fitting and adjustibility issue for a lot of people. Only comes in white. Like the Bummis SWW you can get wicking out the leg bindings.
Bummis SWW - I like these better, especially for the adjustablity. I have found that if I have "alot of diaper" to get it over, I have no wicking issues. Works get over prefolds and most fitteds. Can get them in 4 different prints now! Also, these were made to last and last, it takes a long time for them to look "worn" and I have had very old ones that still work very well.
Bummis Original - I think I had a very old one I should not have even paid money for. It was completely not waterproof, I wish I could speak for a new one. The plus's though were the very soft lycra bindings left no red marks on my newborn, the adjustability is even better than the SWW due to the extremely wide aplix front panel. And the mesh inner made for more breathability. These come in white and all kinds of prints. I also have heard that they can run small, I compared my 7-10# Original to the newborn BSIWW, the cut is not as generous. I was still using the newborn BSIWW a few weeks after I coudln't even dream of getting the original on my ds.