Both Dell and HP laptops are good but, it defends upon the processor. Both i3 and i5 processors are great too.., but, it defends upon your system and your memory. But, for me i preferred to suggest HP it is because HP laptops are hardcore laptops that boost up at a maximum speed.
I would recommend Dell. Toughness Dell hardware has been proven by me, I am a wireless link technician and using the Dell for field work
buy Dell, hard to explain it - short one - last 3 HPs had problems, and 2 Dells work till now without problems. my story.