I think the coolest is whatever works for you.
that said.. I will never again own a PC lol
I've had the vaio, the toshiba, the big, the small, the fancy.. Bad bad and worse and just ugh. No customer service, bad quality, I think each lasted about a year.
My macbook is my baby <3 best computer I've ever had, best customer service/care, I'm just overall happy with it for my needs as a student.
Now, maybe if my needs/life were different.. Id want a PC. but as it is, I think its the perfect computer for me and I'm very happy
so yea, I think my mac is the coolest kid lol