I do actually love our Protill, and it works excellent for residue management, but can turn things quite black very quickly. This is fine if the bias stays wet, but we've been caught a few times where its sopping wet in the fall, then in the spring it's too dry.
And it's really not a great spring tool in our operation. Even with the rubber packer, it leaves things a little too loose if its dry, and packs it to concrete if its wet and sees some sun. If done in the fall, these are non- issues.
We replace hammers yearly, and always sharpen or replace stationary knives. PowerCast tail board does an excellent job of spreading residue full width. We generally like to harrow in the fall when it's hot and dry if we can, and that's usually enough. But if we don't get the weather in the fall, spring we can fall flat.
We have an Amity (back to Concord) PSD61. Its proven itself an extraordinary no till drill, even though it itself isn't no till.
Where I feel like we need an implement to fit better is in the spring for warming and drying, if necessary. It's a big heavy drill that doesn't like mud, which we can often have a lot of.
My dad farmed a lot of dry years, we've both farmed in a lot of wet as well. The key here, is trying to be flexible and adaptable