Netbook, desktop, or laptop for college?

I’m heading to college soon and i’ve been confused about what to get. I was seriously considering a specific laptop (Gateway P7805u FX, gaming laptop, 1,090 dollars) and using it as both a note taker and a replacement for my slightly outdated desktop. I went to the store and realized this thing is MASSIVE, like 10 lbs and the size of my 20 inch desktop monitor. It wasn’t loud so i still thought it was a possibility as a notetaker. The seller asked me what my intention was with it and i told him and he got almost immediately directed me away from it and towards 10” netbooks, telling me everyone in college uses them and that i would look like a fool lugging that laptop around. I considered what he said but thought he might be throwing on a sales pitch to get me to buy a netbook for whatever reason (low sales ect). If i don’t get this laptop my other option is to bring my desktop from home and set it in my dorm and buy a cheap netbook to use for notes and than transfer it everyday. Or find a really small laptop. I’m mostly looking for peoples experience in college university classes and what they see people using (in terms of size, 10”, 15” ect)