I need to buy a new notebook for university, (engineering). I will be using all kind of readers (word, PDFs, cbr), internet (chrome with many opened tabs), sometimes excel or matlab and other softwares, rarely photoshop or modeling softwares (CAD). I have two options: asus ux303ub-r4182t and ux303ub-r4183r; both have 256Gb ssd, and very similar specificatios but one ha i7-6500u and the other i5-6200u; which one do you suggest is better? the price difference is very low (30 eu) but I was wondering if an i5 cpu was better in terms of duration of the battery, which is a very important factor as in university we don't have many plugs. thank you