I'm a dabbler wrote:
Photographing nature for enjoyment is my retirement "occupation."....
Unclehoss wrote:
I have been in your shoes, Canon Rebel, et al. The first suggestion I have is upgrade your glass. Made all the difference in the world going from a kit quality lens to a Canon "L" lens and have no complaints about the camera body at all. I found a fantastic lens, used online for less than half of your allotted budget. The first lens I got was a 24-105 L, helps me with a wide range of subjects and needs.
Of course, in this case we are looking at a 10MP camera with a much older focusing system. The current lens is a decent lens. I think this is one of the rather rare cases where a newer body will overcome the sharpness issues the OP has identified as the problem.