Hello, all.
I'm sure the "40 or 50D" thread has been started many times, but I'm just looking for some insight and honest opinions here rather than cold, hard, technical data (though, as a systems engineer, I love me some data
).
My wife and I have owned the canon digital rebel xt (believe it's the eos 350D) for years now. It's served its purpose very well. We use it in spurts off and on. Sometimes we'll use it days in a row and other times we'll go months without touching it. Up until recently, we rarely used it. However, upon the birth of our first child 2 months ago, my wife has become quite the avid photographist (I make up words...). And, moreso, she has really started to take a liking to photography in general again and so have I.
We own a 10-22mm lens and love it to death. However, we're looking for a nice lens to span the mid-range and have settled on the 24-105mm f/4. I'm currently shopping used ones. Can't make a dang WTB thread because of my low post count, however. 
The purpose for this thread, though, is to seek your input on the purchase of a camera body. We're looking for something to give us more manual options and just an overall better experience (both in form factor, capability, and picture quality) than our 350D xt. A friend owns the 40D and leant it to us for a few days. We immediately knew it was time to step up.
When I started pegging down prices on used 40d's, I came to the realization that the 50d would only run me about $200-300 more. Now, we're not made of money, but it wouldn't be a terrible stretch for me to purchase the 50D. But, the question I have is this: would the additional step up be worthwhile for us?
To me the megapixel size delta is a selling point. What I'm finding in some reviews (particularly the dpreview .. review..) is the 15mp sensor doesn't necessarily equate to a sharper image than the 40d or other, lower mp count, cameras. If I were to go strictly by their review, I would tend to stay with the 40D. I'm not sure if I'm missing other key selling points so I'd appreciate any input you'd be willing to give to this novice.
Again, I know you're sick of the "what should I get" but I'm hoping you fellas (and ladies) will show some mercy to me as this is my first real post here and I'm still finding my way through the dark. We take good care of gear and I'm a definite "trade up" kind of guy.
I'm ultimately thinking my best bet may to just go with a used 40D and focus my expenditure on lenses at this stage, but I was hoping to get some insight from those who have used both. Picture quality is, of course, a major selling point but there's also ease of use and other factors that work their way into the purchase decision.
FWIW, we also own the 550ex lens and have a few cheaper remote flash/trigger accessories to use.
Thanks in advance for your help and suggestions.
- Erin




