I love stainless cookware. It's easy to clean and stays shiny and bright. The disc bottoms in mine heat evenly and don't have hot spots. I'd been using mine for about 7 years and someone asked me how I kept it so shiny and I said, "I wash it." When I need to I scour my pots with Bon Ami. I am careful not to let things burn on and to clean anything that gets on the outside off before it can become permanently attached, other than that it hardly requires anything, no special care. Mine isn't an expensive set and I've only been using it about 16 years now, so when I get it broken in maybe I can give you a better answer.
There is something about cast iron though. The more I use my cast iron the more I prefer it. I've started using the cast iron dutch oven for making pea soup. Somehow it just tastes better.
Don't part with your cast iron...if you must, I'll come get it!