As with beer, there are some things in life that it is silly to cut corners on, and cookware is absolutely one of them.
I have a mish-mash of stuff, Calphalon, Kitchen Aid (which make/markets some pretty darn nice stuff actually!), etcetera. I get what I need and like, not what is "matching".
I also prefer to cook on cast iron whenever possible, and own two very nice cast-iron dutch ovens, several saute' pans, a frying pan, a griddle (a MUST for bacon!), and my pride and joy, rescued from the ruins of my first marriage (and yes, there was a bit of a "custody battle" over it!

) a flat-bottomed cast-iron WOK!
Cast-iron just heats so evenly, it's worth the extra effort to clean, IMO.