Buy a used 2013 Mac Pro now?

Hi all,

So no updates to the Mac Pro at WWDC. I was contemplating trading in my 2015 Macbook Pro (maxed out specs) for the 6-core 2013 Mac Pro for about $2800 (and then sell the Macbook Pro for about $1800). I need more RAM capacity specifically. Alternatively, I was contemplating building out a PC slave machine for ~$1000.

Thoughts?

Cheers!