Stainless steel or wood are the things for cheese. It's expensive, but they last forever, and SS is easily sanitized. It's possible to find pots and utensils at the thrift store for cheap, too. Stainless steel colanders lined with butter muslin are perfect to drain cheeses. Cheese is like bread--a very flexible, situation/environment dependent process, so think about the intent of what you're trying to do rather than the specific gear to do it and look at what you already have that could work.
New England Cheesemaking Supply (
http://www.cheesemaking.com/) is a great resource for equipment and fabulous recipes, which are very user-friendly and step-by-step. They have lots of cultures, both instant and the "perpetual", which are like
sourdough starter.
If I were only spending serious cash on one thing it would be a long stemmed thermometer. Other stuff you can lay hands on, usually, but temperature control is absolutley key.