I've had a chance to use both for a while. I've done side by side tests, and there is literally ZERO difference in image quality. Even in noise. The IR filter IMHO makes no difference from what I've seen. Also, it is still possible to get a lot still serviced on the H3Ds. I just had sensor glass replaced, the auxiliary shutter and contacts on the front and back replaced by Hasselblad/Bron in New Jersey on my H3D-39.
The display sucks though, but in an odd way is more "accurate" then the one on the H3DII. Zooming in 100% on the H3DII is very soft looking, and the display tends to add to much contrast. The H3D classic, however small and low resolution, can give a better idea if your image is in focus or not.