I decided to sell my Macbook Pro 13" Mid-2014 for, what I feel is, a somewhat good return (£600) and I'm in the market for a solid upgrade. I'm looking really at the 15" range purely because A) the 13" models don't offer a quad core i7 configuration/dedicated GPU and B) I'm wanting a 15" laptop this time. So, i've nailed this but what i've not nailed is the model to buy. For me, GPU and CPU is important due to wanting to work with Photoshop, Illustrator and gaming on the move. With the 15" range the 7700hq present in the base model would be far more than sufficient but the GPU is what I'm worried about. I noticed you can buy the GPU upgrade for £90 which I'd do but then wouldn't I just be better to buy the top end MBP and not configure the machine? Regardless which model I go for, I think I'll be buying the GPU upgrade. I suppose, would these machines suffice for PS/Illustrator is a bigger question?