Replying to Laptop vs tablet ?

Currently have a MPB 2012 but he finally died after 5 years and i've already put enough money in it, I won't put more. I was using it for college mainly, but small video editing too. When I had to do video editing, photoshop or gaming, i used my PC that I have at my parents' house.

So my real question is, to remplace my MPB, would you buy an other MB or go for a tablet like a Surface pro tab ? I think that a tablet would be the best because it's small and versatile.

Which tablet would you chose, and would it be powerful enough to do use photoshop & Premiere for small stuff only ?. I'd like to have the possibility to use an external HDD with it and read memory cards !

Thanks !