looking for some advice

[gothicphoto]

Hi,
I've been toying around with photography for about five years and have been thinking about equipment. I currently own a Sigma SG9 and a few lenses. I want to take my art to the next level and start saving for a compleat system. I have set my heart on Zeiss optics and have been told that Contax makes a good camera. Can anyone give me advice on which one. I shoot mostly Family and landscapes with light Portrait needs.
Any advice would help.
Thanks Mike