OK Folks, here is what we went with. After discussing with many people the different capabilities of each camera body, we decided to stop focusing so much on the body as we did the lens being included in the kit or purchased apart from the body. We finally settled on the Canon 50D, 15.1 MP, with the 18-200mm f/3.5-5.6 IS Standard Zoom Lens. This lens seems to receive great reviews and is regarded as a good all-around lens which can be used as a "Leave on" lens.
DPReviews.com and
PDNGearGuide.com both regarded this lens highly as did several other sites. One site complained of barrel creep if the lens was to be used in macro mode and wasn't zoomed out to 200mm already, but we shall see if that is really an issue.
For the money, it made sense to go with a camera that came with this lens as part of it's STOCK kit rather than purchasing the body and camera separately (as we were considering with the 40d).
We also settled on a sunpak tripod. Although it is not as light, due to not being carbon-fiber, it does support what is required for the class.
I thank you all for your input and I hope this thread can continue to thrive to serve as a good once-over for people considering similar inputs. All of you have been very helpful and I thank you for your assistance. This is why I love donationcoder.com and the people who dwell/lurk within.
Thanks again!