I don't use nonstick so can't speak there.. but I love my All Clad pots and pans! as to the rest:
cast iron is cheap, durable and oh so usable.. I love it.. DH hates cleaning it... same with my stoneware- they both really make a difference in cooking!
double boiler- a glass bowl over your favorite pot will work.. or a metal one even!
As to other gadgets:
Ice cream maker.. meijers carries a 20$ one that works well.. and doesn't need more then ice and salt, but has a motor, so no storing in the freezer of a big ring! and you can make multiple batches in a short period.. one of yours adn one with dairy...
bread maker... I can't wait to replace ours...
I use the food processor and mixer a lot too...
-------------------- Dietetics Student (anticipating RD exam in Aug 2010)
IBS - A
Dairy Allergic
Fructose and MSG intollerant