Keep or sell Yamaha PX-2 turntable?

Here's my dilemma. I recently purchased an Acoustic Signature Challenger Mk3, mounted my VPI JMW 9T tonearm and Dynavector 20x2l MC cartridge. This combination so far is sonically the best setup I've heard in my home. My dad recently gave me all his old vintage gear and it includes a Yamaha PX-2 linear tracking turntable. I don't really need it since I have the Challenger Mk3. I really doubt the Yamaha could ever sound as good as the Challenger Mk3. Does anyone care to share any thoughts or want to convince me otherwise? Is there a good reason to keep the PX-2 or should I just sell it?

-Robert