Performance based mac book pro is better. and you cant get the mac user experience from XPS :-) but if you are windows preferred user stay with dell. Many dev tools are free on mac so I think for a good performance and experience mac is the best option.
Use Git submodules. Use your core software as a git submodule. For a new client make a new repo and add the base sub module
https://git-scm.com/book/en/v2/Git-Tools-Submodules
E unata machn sony eke low light recording patta. Ekata gahanna 70d walata baa. Hoda EF mount ekak gatta nm ona EF lense ekak set karaganna plwn. Video walata maha SONY thama ithnin :D Grading walata supiri. Videos patta crispy bn. Colour grading oneth na :D