I've been researching this as well, because I'm looking into obtaining a new computer for possible video recordings. Right now, I'm looking at either the version with the 2 TB of RAM and Intel i7, or the one with i5s and 1 TB Ram.
I've gone through the entire process with the 2 TB / i7s, but I'm wondering if it's really worth it. My total sum after going through their "personalizing" process was about $1,150. However, if I can save a few hundred dollars and downgrade to the i5s and 1 TB, that'd be nice as well, as I need to get microphones / headsets (I'm looking into the x12s for that) and possibly a keyboard.
What is the difference between i5s and i7s?