That's only for you to say but I think we may be talking a different price bracket here.I understand the MC/Balanced set up and you've recommended the X2B in other threads but is there a big improvement in sound quality/clarity/soundstage over my RP3 with say the Goldring 1042 or Ortofon 2M Black on board?
Just considering options for a possible upgrade path at a later date.
That said the complete Project true balanced package (about £2k) should be better sounding with potential for a better MC cartridge to be fitted. I strongly suggest you attempt to audition before spending this sort of money and weigh up the benefits or not of a balanced vinyl front end versus a conventional one with more expensive MM cartridge.
Project have simply added a new avenue in to the maze...