People always talk about how you should upgrade your lens before you upgrade you camera body. I was recently ask if I want to upgrade my Nikon D40 to a D200 but I'm thinking that I probably should get some more lens before I worry about the camera even though the D200 was quite cheap (400 for a body with around 20,000+ frames). So far I only have the 18-55mm kit len and the 55-200 along with an sb-600 and I'm under the impression that a lens like the 18-55 lens would not be appropriate for something like the D200 because of the quality does not allow the D200 to show its true potention. Is this an appropriate concern? I'm thinking with with 400 buck, I should upgrade to a Sima 18-50mm f2.8 lens first and that would give more bang for by buck then getting the D200. I figured, it wouldn't be long before the price of the D300 and the D90 take a hit and that time would be more appropriate to get a D300 camera body for around the same price the D200 is being offered today and I'll have all my lens by then Anyone disagree?