I will likely look into that one or newer, as I'd like to run Resolve. Thanks for the info, HurtinMinorKey.
On rethinking the above, I actually also have an older 2008 Mac Pro tower here that I hadn't considered. It has a default ATI 2600XT GPU. Any suggestions for GPU upgrades? I'm hoping that marrying the Mac Pro with a LED display or such would not only be the cheaper route, in my case, but would also allow me to repurpose it.