Hi Shannon,
Information overload has set in! I have used almost every type of litter, so I can give you a rundown on the ones that I prefer. It is a personal choice, and I am sure people will disagree with some of my choices, but here are my favorites. The most important things for me in a litter are odor control, must be safe for bunnies to nibble on, and must be compostable.
Aspen Supreme by Green Pet - this is a pelleted litter made from aspen saw dust. Safe for bunnies, and has a wonderful woody smell to it. This is the best litter that I have used in cutting down ammonia smell.
Cat Country/Critter Country - This one is made from pelleted wheat straw. The cat and small animal products are the same, you can use them interchangeably. Good odor control, composts well.
Wood stove pellets/barn dry pellets - These are larger than the usual litter pellets and are made from pine sawdust. Very inexpensive, lots of our foster sites use this litter for that reason. Can be hard to find, I get it at a feed store.
Yesterday's News - made from recycled newsprint, this one does a pretty good job with odor control. It can get soggy if the box is not cleaned frequently enough.
So there you have it. When I am counseling new bunny caregivers I always recommend either the Aspen Supreme or the Cat Country, as these are easy to find in our area. Good luck!