Sortospino

I recently ordered by amazon the hp spectre 360, with the i7, 16 GB of Ram and the 4k screen. I found a good deal for 1300 dollars, warranty for next 4 years included. It will arrive on tuesday. I'm a student and I use mainly the pc for internet, office, matlab, and i needed a pc to read the scientific papers and highlight with the pen. I pointed on the hp spectre for the long battery, since I travel on the bus 1 h to go and back to university to home. I decided to take it just to have something that can last for 3-4 years without big issues. I just need something light and quite to do presentations at lab meetings. The only thing that is very heavy on the pc is if i run Comsol (finite element simulation) but i do it occasionally and i use the server for big stuff. Should I take this flex 14 instead of the hp spectre? I'd save 700 bucks basically. What do you suggest? Is the spectre worth the money more in this case? does it make tons of noise? or are just the older models?