OSX-based computers have other problems relating directly to the
sign industry.
Just about all of the industry-specific software for the sign industry runs only on Windows. There are no Mac versions of Flexi, Gerber Omega, etc. RIP software geared for large format printers (Onyx, RasterLink Pro, etc) also tends to be very much a
Windows-only thing. The same is true for routing table software.
For now, it's possible to run
Windows natively on current Mac hardware under Bootcamp/Parallels due to the Intel CPUs inside. But that's going away as Apple transitions to its own ARM-based CPUs. While Apple has said it will support Intel-based Macs
for some time we all know, based on Apple's own history that support will not be for more than a couple or so years. These days many of us tend to use desktop PCs and notebooks for considerably longer. 7-10 year (or longer) life spans are common for computers now, unless the PC is a cheap entry-level product.
It doesn't take a heck of a lot of compute horsepower to run Photoshop and Illustrator adequately. Most new computers now have to do basic things like play HD-quality video steams without dropping frames or stuttering the playback in other ways. But who knows what lies ahead in the next couple or so years? Spending more up front for a more powerful system will translate into additional years of useful product life.
Right now the only Apple product I would recommend is an
iPad Pro as a specialty tool to supplement one's desktop/notebook PC work. The Mac Pro tower is horribly over-priced. I dislike Apple's notebooks for how the RAM and everthing else inside is soldered-in permanently. Most
Windows-based notebooks can be cracked open and have various internals upgraded (RAM, SSDs, battery, etc). But, buyer beware. Even some PCs have soldered-in RAM and other baloney.