I don't know about the MintLP Best Tractor you mentioned. I used to have the latest Graham 2.2 before the Phantom. The sonic difference is substanial. Deeper and more impactful bass, fuller body, better transient response and dynamic, more focused image, and bigger soundstage. If you can afford the Phantom, grab it.
By the way, I just upgraded to the Phantom II which is also better than the original Phantom. However, the sonic difference between Phantom I and II is not as much as that between the 2.2 and Phantom I. Hope that helps.
By the way, I just upgraded to the Phantom II which is also better than the original Phantom. However, the sonic difference between Phantom I and II is not as much as that between the 2.2 and Phantom I. Hope that helps.