1. Ugliest diaper you have seen
A bit of an odd one that I'd bet not many have seen in person: QTTY Rawr
2. Best looking diaper you have seen
I really like the high resolution print on Thrust Vector's (rev2) Crinklz. Their new Astronaut and Aquanaut are also very high res and cute characters, but there's less color to them (which I suppose is better if you're looking for something closer to an all-white diaper)
3. Least functional you have personally used
Original Cushies. aka "leakies" (I'm only going to count abdl diapers, it's a
long way down to "rock bottom" in the medical diaper scene)
4. Most functional you have personally used
Rearz Safari / InspireInControl are the highest capacity / most dependable I've worn regularly. ABU's PeekABU is trying to take that title away, but I haven't worn enough of them in the proper size yet to pass the crown. Just because a diaper has more capacity on paper doesn't make it the most functional - it has to wick, channel well, fit snug around the legs, and not press out to void leaks when heavily wet. I trust Safari when I need
maximum capacity.