I’d keep the Technics. But, I dig vintage equipment (look at my signature). The Technics will likely perform better than the pro-ject after a proper servicing (lube bearings, change belt, etc.) and last much longer. It is much easier to swap cartridges on the Technics because of its removable headshell. Just get a couple of spare headshells so you can have different cartridges mounted and ready to go. It’s also not a pain in the butt to change between 33 1/3 and 45 rpm on the Technics. It all depends on your personal tastes. Some will say to keep both, so you have a back-up table if one goes to pot. Totally up to you. I officially vote for the Technics.