Don't let S mode deter you, a computer can be switched out of S mode (but then can't be switched back). However, even 64GB of storage is pretty tight, I personally wouldn't want less than 128GB of storage.
Between the 2 you posted, go with #2. It has a bigger screen, faster processor and twice as much storage. It costs $70 more but it's worth it. #2 also has a touchscreen if that's of interest to you.