I bought this double boiler for my wife, she makes a number of things using melted chocolate and had just been using a stainless steel bowl over a pan of water. Since then, I've been using it to make brownies, and I love it. My only complaint is the lip around the middle of the top pan: it tends to collect the melted chocolate. Not nearly a deal-breaker, just an observation.
It's stainless, cleans easily, and looks nice. The bottom pan has a heavy bottom, which I didn't expect. If the size works for you, I can't think of a reason to buy a more expensive model. Highly recommended.