Reply to DJ Traktor Laptop 13inch vs 15inch

I'm in the market for a used laptop for DJing. There are far more 13inch laptops available vs 15 inch ones. I plan to use the laptop with the Remix decks which means I will almost always have a 3rd deck running at full size. Will the 15 inch screen real estate make that much of a difference? Weight isn't an issue to me.