I am not trying to brag but help the OP make a decision. I am an expert in computer hardware and operating systems. The hardware in the Macs are high end hardware. In order to get the same quality hardware in a Windows based operating system machine, you would have to build your own. You could send me a PM with your budget and I could give you a recommendation for hardware but you would have to put it together yourself or take the list into a local Mom and Pop PC store. If you decide to go Windows, DO NOT buy a name brand one off the shelf. Go into a local Mom and Pop PC store and have them build you one based on my recommendations if you can not put it together yourself.
From an Operating System Side, Macs simply are more reliable and are not bogged down with malware and potentially unwanted programs (PUP's). Their file system is substantially different and more efficient than Windows. By default, you are also never logged in as an administrator which has numerous advantages for security, malware, PUPs, and system recovery options. On the software side, MAC has everything available that you need and is extremely optimized for the artist programs.
I personally use Linux which is similar to Mac and have a custom hardware configuration to suite my other needs. If all I wanted in a computer was to use it for office applications, photo editing / art software, and web browsing, I would use a MAC. When it comes to the financial aspect, you will get what you pay for if it's just going in and buying something off the shelf. If that is the case, save yourself the headache and buy a Mac desktop of laptop. Make sure you get at least 8GB of ram and an SSD drive. Invest in an external drive for data storage.