Pass labs to Odyssey audio mono's

Thanks for the input guys, much appreciated..
This makes it kind of touch to make a decision though..
I have seen the Pass X250.5 for right over $3500.00 , but norally runs between $4000.00 to $5000.00 slightly used..
I was told the Odyssey Extreme's have improved even more recently..
Thank you,
Paul

Thanks to everyone for your help , that includes Polara that just recently posted, all greatly appreciated on the inputs..Im considering trying the Exteme mono's , since they come with such a great price..
Paul