I read a comment recently that seems to be appropriate. This is just a general comment regarding the allocation of resources...
If you want beautiful landscapes; which is better: to buy a new camera and search for images in your local park or stick with the gear you already have and use the money to travel to some scenic spot and shoot?
Donald has done great work with his 40D and I submit these two images as an example of what can be done with a camera like the Canon 30D...
When I was shooting at Yosemite with the 30D, I had no ideas that the camera wasn't any good