Well, regardless of opinion, I think the facts speak for themselves. I honestly don't know how anyone could argue that the D30 is a superior camera compared to the D1X/H, unless there was brand bias involved. These cameras are in totally different class ranges, the D30 competes with the S1 and the D1X/H competes with the EOS 1D. Regardless of image quality, just the features alone blow the D30 away, which is basically just a low-end consumer body that was converted to digital format. Yes, the D30 takes marvelous photos, but it is not better than what the D1X/H produces...There have been countless comparison tests done between this group and the D30 has never won.
Obviously build quality and speed is a major factor for a lot of people, otherwise manufacturers wouldn't even bother making such a camera, right? You put a D30 in a photojournalist's hands for a couple of weeks, you will see why those things are so important, the D30 could not handle the punishment put upon itself for those applications, whereas cameras like the D1X/H and EOS 1D can. As far as speed goes, the D30 is inferior in both fps rates and AF speed. Speed is important too, not just to slide collectors....Wildlife photographers, sports photographers, etc...all need the capability of a fast frame rate and a fast AF.
Build quality, speed, and features don't matter? Hmmmmmm.... I guess us gullible D1X/H owners were duped into buying something we don't really need!
To most people, the sky is the limit. To those who love aviation, the sky is home