Better the devil you know than the devil you don't.
Buying a used dSLR is a big gamble. You don't know how much use and abuse it's received. I think you're better off with your D50 that with someone else's D100.
- The lens is the thing.
- 'Full Frame' is the new 'Medium Format'.
- "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.