Nikon D1x vs D3000 as of picture quality?

Camera will be used for nature and Weddings

The D1x is a 6 mp heavy duty camera that is outshot by the entry-level D3000 and its 10.2 mp output. The D1x uses a heavy, short-life NimH battery, instead of a Lithium-Ion like the D3000. The lcd screen is much smaller and dimmer, as well. The only positive would be the ability to use older lenses on the D1x.
http://www.kenrockwell.com/...on/d1x.htm

BUT, I'd strongly suggest moving up one notch and looking at the D3100. Better sensor, better low-light performance, and a definite step up from the D3000, as well as a quantum leap over the D1x.
http://www.kenrockwell.com/.../d3100.htm

Picture quality depends on you. The camera is just a tool. What really matters is how much you know about the basic principles of photography.

Between the two however, the D3000 is far more superior and advanced. The D1x is considered a relic dinosaur nowadays. If you wanted really cheap, hunt for a D40 or a D50. At least they have more parts (especially batteries) still available in the market.

For still image quality, an important difference between Nikon D3000 and Nikon D1X is Megapixels. While Megapixels of Nikon D3000 is 10.75 megapixels, that of Nikon D1X is 5.89 megapixels, a difference of 4.86 megapixels. Part of manual controls is Maximum ISO. While most people find that Maximum ISO is a significant consideration, the difference between Nikon D3000 at ISO 100 and Nikon D1X at ISO 125 is ISO 25.