Well, that depends on what colour you like the most...with Tamatave's, you get a predominantly red or red/orange animal. With an Ambilobe, colors can range from blue stripes over a green background to red stripes over a yellow background and everything in between. Then you have Maroantsetra's, Ambanja's, Sambava's, Ankaramy's...the list goes on. You probably found out a lot from your web search...here's a site that will give you detailed descriptions.
http://www.bluebeastreptile.com/locale.htm
http://chameleonsonly.com/ has a lot of nice pix; ALL my chams came from them.
The caging and environment needs WILL be more expensive than the animal itself...the ones from superior lines have no peer when it comes to sheer color, but they have very specific requirements and you can't cheat. They require a significant amount of your time every day, you can't just throw crix in. They can't be handled too much. The rewards are worth it, though.
Have you ever kept reptiles?