Good post. I don't shoot steel cased ammo, but there is nothing wrong with it, if you clean and maintain your gun.Steel cased ammo can be a real bargain in you don't reload. The only bad thing is steel cases are often lacquered to keep the case from rusting. That lacquer can build up in the chamber over time and heat can make it sticky. It can lead to feeding and ejection problems if builds up enough. It usually takes A LOT of rounds to cause problems, but it's still something to keep in mind. With regular cleaning of the chamber, they work like a charm for range use. Some brands of steel cased ammo use a zinc or brass plating instead of lacquer, so those would be even better.
Overall I'd say I prefer brass, but I've never really had any problems with steel cased stuff either. All cheap ammo is usually dirty as heck. I have to clean my guns more with it anyway, so it doesn't make much difference to me. It usually comes down to what I can find cheap. I'd love to shoot only black hills or gold dots, but my wallet just isn't fat enough.