Hi Everyone, I am not sure if this comparison has been listed in a thread here or not, and I hate to start a new thread if one already exists. Sorry in advance if I missed it 
For the last three years I have been a garment printer and graphic artist. I have been doing garment printing on a big machine called a Direct to Garment printer, which basically prints photo quality prints onto fabric. I will try to not make this to long but I need to include certain info haha. Anyways my business was based on doing childrens clothing but there has been a new law passed called the CSPIA law, which makes it mandatory to test and childrens items for sale, for lead and phalates.
So anyways during the last year as this law has been going into effect, I have decided to change my business model to printing on not only fabrics but also printing on stretched canvases. I was not sure at all it would work with my machine, but found they came out awesome. Also during this time I have been learning to shoot better photos. Sooooooo my goal now is to get a better camera and try to incorporate my photography into my printing as well.
Now to my point
What camera would you buy to do more professional photos with, the 5D mark I or the 50D? It is more worth the money on the 5D? I really dont want to buy a new camera and then find I need a better one for professional photos. Can the 50D take work for professional photos without having the full frame? The forum has been a life saver thus far for information, and your help is much appreciated. Also is it more worth buying the 50D and then buying a couple of really great lenses, or buying the 5D and one really great lens? I know that it probably a question that is going to be based on what type of photos I am taking right? hehe.
Most of my photos will be geared towards of course childrens photography of candid shots more so then studio type shots. Also do you think the 70-200 would be a good lens for this? right now I have a few lenses but not one in particular that is really great. My best lens right now is the Canon 100 mm 1.2.8 ultrasonic Macro. The others I have are basic kit lenses such as the 18-55 and 75-300, neither one is IS. I am currently shooting with a rebel xt.
Ok I think that is it for now
I thank you so much if you made it all the way through this post, but I wanted to give a full picture of what I am trying to accomplish
I appreciate all feedback.

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