holding out on a new mac pro?

You find u can get a prev Mac pro for $499. Should you go old school or new school???well.. One thing I can ONLY guess is that adobe ??? will have its sick 2015 Suite hopefully, for download?? My predict. Is kinda that this may be a 1 to 1.5gb vram gpu module??? Another predict is the next new Mac Pro will come in 3.7 &3.9 'flavours'.. Should u resist the used temp. Depends if you got $249 ((in my estimate.)) Lying around. But DO consider ddo you need a appl. That could \gasp\ make lik a wireframe on a photo??