You did not mention if you are buying used or new? The CJMF2500A would be what I would recommend over the Pass X150. If you are buying used make sure that the CJ is the "A" version. I am currently using a CJ 2500A and like it very much, more detailed than the non "A" model. The "A" version is now standard and with non "A" models CJ offers an upgrade package. The Pass is an excellent amp as well and if you decide to go that route then I would consider the X250 over the X150 which is more comparable to the CJ MF2500A at least in power. Good Luck and Happy Listening!
Chuck
Chuck