From the weekly ppvs off the top of my head the 4 way for the first x division title is a really good match.
AJ & Daniels vs LAX ultimate x match is awesome. Same for the final resolution ultimate x between aj petey Williams and Chris sabin. Samoa Joe vs AJ from turning point 05 is like my second favourite tna match too, probably like it more than the unbreakable three way (which is still awesome). Also had my current TNA moty w/ Bobby Roode on the 5/24 impact.