Especially carbon steel crepes pans (https://www.debuyer.com/en/poele-a-crepes-mineral-b-1472.htm...) are completely unbeatable. I have two of them and I can feed a small crowd of family and friends faster than they can eat. Nothing sticks if you take proper care.
The best thing, they are dirt cheap.
We do, however, still use our cast iron griddle for making bacon in the oven. Comes out perfect every time.
For anyone reading who is new to carbon steel, the trick to non-stick cooking is making sure the pan gets hot. And if something does stick? It pretty much wipes right off while the pan is still hot.
By complete accident my spatula is also from DeBuyer (https://www.debuyer.com/en/flexible-turner-slotted-fkofficiu...). It is very sharp and it easily scrapes anything that dares to stick (due to my mistake of not getting it hot enough), without smearing it.
Pros are they can take very high temperatures, you can be rough with them, are non-stick when seasoned and at a proper temperature (like cast iron), and much lighter than cast iron.
Cons are you don't want to cook liquidy acidic foods in them that often (removes the seasoning off the pan), they can rust easily if not seasoned, and require slightly more maintenance then stainless steel or Teflon pans. Basically you're not washing these with dish soap. Just a rinse, maybe some scrubbing with kosher salt, and heating it on the stove to dry and sterilize it.
Keeping it lightly oiled when cooking or storing it helps too. They're a great work-horse pans. We got ours after having to throw out our last scratched Teflon pans. Making scrambled eggs in carbon steel was hard at first, but over time as a better seasoning developed and figuring out the right temperatures to use, I now get the same results as I use to in Teflon.
In my experience the searing/frying performance of carbon steel is not an issue for the overwhelming majority of things I cook, ergo I don't really care that cast iron has a higher capacity. The tighter temperature control, on the other hand, is always nice.
I still use my cast irons sometimes for things where that heat capacity is really nice (searing a huge steak or something like that), but I use carbon steel much more frequently.
I was (and to a degree still am) a big cast iron guy, but I find that these days I use my carbon steel pans much, much more frequently. They share many of the benefits of cast iron in terms of durability, oven safety, high temp cooking, natural non-stick, etc. However they can be much, much lighter and their heating properties make them superior for many, and I would argue most (but not all!), applications.
These days if someone said they needed 1 quiver killer pan, I would unquestionably recommend a carbon steel skillet over a cast iron one.
If you're someone who likes using cast iron, I think you are doing yourself a major disservice by not trying carbon steel.