First digital was my dad's Nikon CP 950. He bought the 10D before the DReb came out. I ended up hijacking the 10D for myself and he bought a DReb for himself after it came out.
The number people starting with the D30 surprises me - it was very pricey at the time. It would be interesting to do this again in about 12 to 18 months after the 350XT has run its life cycle. Surprisingly, not one vote for the 350XT yet
The result are probably somewhat biased since this board's demographic leans towards more towards the advanced enthusiast to work pro rather than average home user, but still surprising. For example, the same poll at DPreview would probably have a much higher result on the 300D.
The next thing that would be very interesting is if the results could be correlated with: 1) number times you upgraded, 2) your current dSLR.
The D30 was pricey, but not nearly as pricey as the competition (which was little to none). Also if you had a stock of EF lenses, it was your best bet.
What an amazing camera it was image-wise. I am still quite happy with its output. Those 3.25mp work hard! But the flip side is, as DavidP said, the photographic side was very, very weak. The 3-point AF had no highlighting confirmation. That' was ok, but it was also very poor at locking focus. Somewhere along the arc of the camera's development, Canon (maybe it was Chuck W) admitted that they had re-used the focusing mechanism out of the APS Eos IX camera.
I found the D60 to be a big disappoingment after the D30. Sold it for the 10D. The 10D and me never could focus well together. I suspected, as many had, that Canon recycled again, this time the focusing mechanism from the Eos/Elan 7 (which itself was stunted on purpose to separate it from the 3 and 1 series, read between the lines at the Canon camera museum: http://www.canon.com/camera-museum/camera/2000-/data/2000_eos7.html ). It also had low light focusing problems (the 7 that is, and for me, the 10D as well).
For me, the very first time I felt I was holding a camera and not a computer gussied up to be a camera as an afterthought was with the 1D.
The 1D had its own host of problems, including purple (which it shared with the D30) and the infamous banding at high ISO. But wow, excellent camera.
The 1DmkII and me never could get along. I felt the high ISO performance wasn't quite right. The same was true of the 20D. They both, for me (ie, not trying to start a flame war) seemed to lose detail in exchange for low noise at high ISO.
Now I shoot with a 1Ds. And that is an amazing camera. It's noise levels however, although better in print than film, are no where near as clean as the 1DmkII or 20D. But man, with a fast lens and all the time in the world, it is a photograph godzilla.
First DSLR is my 20D, what a sweet camera!