Speaking from personal experience, I wouldn't want anything less than full HD on my 15" laptop.
It is smaller and needs some getting used to the first few days, but Windows is resized to 125%, so that it feels more like what you're used to. So yes, I really recommend it.
Personally I've even changed this to 100%, but I'm still quite young. This preference might be different depending on your age, your eyes and personal choices.