I just got rid of a 2006 Mac Pro since I'm moving in a few months, but it was pretty great. There's a ton of aftermarket upgrades you can do and even mine, the

I just got rid of a 2006 Mac Pro since I'm moving in a few months, but it was pretty great. There's a ton of aftermarket upgrades you can do and even mine, the oldest Intel model, could run El Cap. The subreddit /r/macpro has a ton of info and if you get a 4,1 or 5,1 it'll go up to 12 cores and run Mojave easily.