I personally don't like the gravel kind, I need the ones that take away the pee smell. I do like feline pine, which is great if you only have a single cat, but not the best if you have more than one. I use it for my feral when she sleeps in the garage all winter, and I love it. So easy, and you have to only use a few inches of it at a time.
But I have 4 litter boxes, and 4 cats inside. My goal is to keep the boxes as close to immaculate as I can. I love the clumping ability of Scoop Away, I think it is the best, but it is very, very dusty. It does settle after you pour it, but when you initially pour it, you almost need a dust mask. It works great though. I put all 35 pounds of the box of 2 that I buy in one of the large, rubbermaid containers I use for a litterbox, and as long as you keep it 4-5 inches deep and scoop it daily, you can go a long time without having to completely clean it out. I do wipe the sides down once a week though. I don't have a lid, my cats jump in and out of it just fine. I have 3 boxes like that.
I do like World's Best Cat Litter, which is great if you only have 1 or 2 cats, I think it would work great, but for multiple cats, I think it gets gross pretty quickly.
Arm and Hammer is great also, and usually cheaper than some of the others. Tidy Cat is also really good. Those are the go to ones that I usually buy.
I did have a Breeze litter box, and it was great. It uses plastic pellets that last a month and the urine is caught on a super absorbent pad that you change weekly. There is no litter tracking, which is awesome. I loved it and was able to get my cats to use it, but they preferred the ones with clumping litter and would pick it over the Breeze, so I stopped using it. But the concept is great, and if you only have 1 cat, it would be my pick. If you are super picky and hate litter tracking, it is a great choice.