I've written some great information about Le Crueset Dutch Ovens on my blog. There are also some other posts with recipes there for dishes that are ideal for Le Crueset.
They can be heavy, but that's also why they cook so evenly. Talk about durable - they will outlive you! Prices do vary, and rebates or free shipping are often available. the above link will give you a number of choices and options (as well as places to go for ALL nine of the colors. I use the granite color, but wish I had been more adventurous.)