I would say if your gun can shoot off a few mags of steel, go for it. I think brass will play nice to your barrel and keep the gun cleaner. If mine shot steel, I would have been shooting it. Now I won't buy steel because all the problems I had with it.
Definitely don't want steel case for self defense situations. I like brass since I reload so kinda buy geared towards brass. I know what my rifles like and load accordingly. I have shot a few thousand rds of steel case in my pistols over 10 years that is. Very little in my rifles.