My time to jump from the Ultra will present itself when the 3 has appeared, at which time, I'll buy the 2 second hand, or the new 3 outright. Until then, I do not perceive the 2 being the salvation or the revelation that the 1 was. I believe it is an incremental improvement whose benefits are palpable, but whose relative value next to other purchasing options is debatable.
I think it's good that FA doggedly improve their product, and I think it's unreasonable for people to complain that they should stay on the Std/Ultra platform. A digital model is an imperfect facsimile, always meriting improvement. And I appreciate usability improvements, such as the headphone jack.
Otoh, if someone were to have asked FA a year ago whether the Std or Ultra were 92% there, regarding the audio facsimile of a mic'd amp/cab/guitar, I believe they would have said 'yes'. They might have even given you 95%, with some caveats. I can live w/o the 5% difference in the meantime, and without the headphone jack, and plow that money into weaker points in my audio chain.