I use different kinds of pans for different things. For nice, everyday use, I like Reverewear Stainless Steel saucepans. (Mine have a copper-clad bottom.)
We have several Calphalon pieces we rec'd when we were married, and quite frankly I think the stuff is overhyped. It is pretty nice if you're cooling sauces that require extremely even heating, but the saute pans have always had problems with certain things sticking (e.g., eggs). I have a large, generic brand aluminum (non-anodized) saute pan that I use for big jobs.
As far as skillets go, I like to have a good sized, well-seasoned iron frying pan. I also have several sizes of non-stick coated (Silverstone) saute/frying pans.
I have big aluminum 25 qt. stock pot and a 10 quart stockpot (Reverewear, I think) that is stainless steel with an aluminum-clad bottom.
The two things I won't do without are a good carbon steel wok (a big one, with a lid) and a Magafesa pressure-cooker (mine is an 8 qt., but the 6 qt. model is good, too).
HTH,
Jim