I've just bought a 30D, and as I already have the 10D and a D60, I am able to compare the three cameras side by side.
Although the 30D is only a slight upgrade from the 20D, I must say that the overall quality of the body materials and 'feel' of the 30D is not as good as my 20D or even the D60. And certainly not what I expected from a 'prosumer' quality camera.
And when you compare the BG-E2 and the older BG-ED3 battery grips, they're miles apart. The BG-E2 being much more 'plastiky' and lacking the overall better quality of my older grips.
Perhaps that's the reason why the 30D is being so heavily discounted at the moment, (mine cost me £804.99 from Jessops) or is it because the Nikon D200 has finally knocked the 20D/30D off of its top spot?
(though I find that's not something I care all that much about). I have, however, compared the 20D and 30D side-by-side and I thought that if there were any difference it was slightly in the 30D's favour - the hand-grip felt better to me and to my eye the subtle difference in the body finish went the way of the 30D as well.

