Chas,
I touched a Pa1x 3 or so years ago and I agree just from owning an i30, that the Korg styles are the most important feature to me. Being a sax player who does left hand chording and a bit of improvising with the right hand while performing vocals, the 76 keys are not important.
I would miss the great Backing Sequencer on the i30. An X i30 owner who now has the Pa1X says the sequencer on the Pa1x does not compare with the i30 sequencer.

I'm the only lone wolf here that even cares about a sequencer on an arranger and I understand it's because I'm the only one who performs using sequences playing a horn on this forum
Boo.