Don't get some shitty laptop just because you'll have to man up once a week and move your rig.
A computer is better cos you still can modify it at any time and it's cheaper to buy and to modify
The Only Bests :
R3d_L!n3(Fares)
Aeroman (Brent)
TheCamels8 (Ori)
Laptops are computers...
Anyways, if you get a desktop (esp a custom build one) the price is significantly lower than if you bought a laptop. However, I personally go for gaming laptops since I like the idea of portability. MSI has great gaming laptops.
For gaming you're gonna want to use a Desktop.
Personally I like the Lenovo Y series, pretty cheap for the specs.