But I think 650 (at least for CD1) should be used to be as compatible as possible. It's not always good to cater for the majority, some minorities have a big influence (stupid journalist reviewers...)
I agree with this: 650MB for CD1, 700MB for the rest, buys us an extra 100MB without completely cutting off older equipment.
Looks a nice compromise to get sure install work everywhere. I vote for this one.
