Opinions on Solid States vs M.2 drives?

Well, I have 3 drives, 1 HDD, 1 SSD and 1 m.2.

I use my 256GB m.2 NVMe drive as my boot device (Windows). I use it so that as soon as I press the power button, literally 3 to 7 seconds later I'm in windows and can immediately open programs or browse the web.

I use my 1 Terabyte Samsung SSD for game storage, any and every game.

Finally, my 1 Terabyte Hard Disk Drive is used for random non-essential storage.

Long story short, if you want to boot windows faster than a 5400RPM or 7200RPM HDD, buy a cheap 120GB/128GB SATA III 6GB/s SSD and install windows onto it. If you want even faster boot/load times buy a 256GB m.2.