While not a Sony fan, I would prefer the 1070. It is an ES in all but name and warranty and gets great reviews. I agree with JG that you are close to actual ES territory in price however. I also agree that there are other options out there but apparently you have narrowed things down to these two in which case I suggest you audition them with an extended listening session if possible.
The DB line is ES EXCEPT for the singal reproduction, which is why I still don't think they are that great. The amplification is definitely ES, but the sound reproduction is little better than the DE line in my experience.
I don't mean to knock your choices either. As Paul said, if you have already narrowed it down to those two, spend some time with each, preferably with the same, or at least similar gear and do some listening with your favorite CDs.
If Sony is a must for you, I would strongly suggest auditioning the 3ES. I helped setup my friends, and it is a good receiver.