aluminum is as good as copper for heat distribution. a metal sandwich with a slab of aluminum between the stainless steel layers. steel is a poor conductor of heat, and the copper or aluminum spreads it evenly around. so much better than a thin, flimsy, single layer of stainless, and an all-aluminum pan will melt the first time you forget it and let it overheat.
I just use a Lodge cast iron frying pan for most of my cooking. you leave a thin layer of grease on it, and burn it on for a sort of non-stick coating. I cook the bacon first, and then fry eggs in the grease. scrape it down with the spatula, you literally can't hurt the cast iron.
