Mac or pc help please!

Hello, i need to upgrade my computer and wondering if anyone can help, there are so many options i am over whelmed with all the choices and i dont know which is the best route.
i have been looking into mac and the macbooks as i like the idea of being able to take my work on my travels, but does anyone know if the new mac books are capable of vray renderings and with sufficient speeds?
at the moment i have a 8 year old computer with 16gb
Intel(R) Core™ i7-6700K CPU @ 4.00GHz 4.00 GHzand
the graphics card isnt great

so i think anything will be an improvement for me, im just hoping someone can help advise the best route to go and any ones to stay away from as its such a big purchase.

i mainly model individual properties in sketch up and then use vray to render and photoshop. i also use AutoCAD and would like to venture into using the motion softwares like enscape.
any help would be great.
thanks
linda