Yes and no.
For things like 9mm and 45 ACP they are awesome. No lube required.
For revolver cartridges they are a mixed blessing. Steel dies can have a taper, the carbide/titanium dies do not. This means the case can be oversized towards the base. Not good for case life if you have a gun with a large chmaber- the kind Ruger and Marlin like for 45 Colt in particular.
That said, I use them exclusively. I just adjust the die so only upper portion of the case is sized. I size just below where the base of the bullet will sit. Makes for some odd shaped cases at time but it works well.
Like anything else, some love me, some hate em. I'm happy with mine and I like the no lube required part. I just had to find a way to maximize their benefits while mitigating the potential downside.