MacBook Pro: 4GB or 8GB? Solid state drive (SSD) or not?

I’ll soon be publishing a new research article on memory and solid state drives vs hard drives in the new MacBook Pro Core i7— see my review of the MacBook Pro Core i7.

I sent my advance report on the Mac Pro 3.33GHz quad vs 2.93GHz 8-core earlier today to the mailing list. Those who didn’t sign up will have to wait a bit longer for publication in Mac Performance Guide. Sign up for Newsletter + Alerts Do you need 8GB in the MacBook Pro?

What about a solid state drive (SSD), or two of them in a MacBook Pro?

The full report explores 4G vs 8GB and hard drive vs single and dual solid state drives.