I want change my old CD Superscope PAD 575.

Now I have see on my location shop two units , one Marantz SA1 used( 90% )price 2000USD and one Marantz SA11S1 brand new priced 2150Usd.What will I choose? Please anyone give me oppion.
Best regards

I was in same situation 2 weeks ago. I took SA-1 after
2 hours' listening of both because the density of mid
of SA1 is far better resulting in musical integrity
maybe even better than most of 5-10K gears.