Hi Goerge, Mike, others..
We seem to be discussing different elements of same process. If I were to put in to some kind of a structure (which hopefully makes some sense of all of this..):
The training process- vipassana/vipassana nana/seeing tilakkana
The yogi sees anicca, dukkha, anatta and the insubstantial nature of the all phenomena (the five aggregates)
This is seen to progress through various stages like nibbida, viraga, nirod/visuddhi/vipassana nana
There is a sense of detachment which progressively gets stronger
There is no 'let-up' in the arising of the aggregates- we perceive everything arising and passing away. ie the object of meditation doesn't change.
The moment of attaining magga-phala/vimutti/release/nibbana (at the 4 stages of stream entry, sakadagami,anagami and arahanth)
Fetters are broken
Aggregates cease/stop arising/emptiness ensues/consciousness ceases/'pitch black emptiness' for a moment (or two)
(this is the culmination of the vipassana practice mentioned above. Detachment is at its highest. Insight/vijja is at its strongest. The lack of avijja ie- the cessation of avijja leads to the ...the cesation of consciousness as per paticcasamuppada)
The object of meditation (and everything else) vanishes.
What happens afterwards
Consciousness is not bound by the fetters just broken
Aggregates start up again
-there is a higher degree of peace
Aggregates 'start up again' -ie arising and passing away resumes as the yogi hasn't died and the body, which is a result of avijja (my interpretation) still continue to function/live- hence the 'ariya' continues to perceive the world. But once the 'jivita-indriya- 'life faculty' also fades there is 'pari-nibbana'- complete cessation, where the aggregates stop arising and all suffering ceases permanently. So in answer to the question does the arahanth suffer- we cannot give a categorical answer as yes or no, but it is to be explained that he does not experience mental suffering, but has the suffering of the aggregates, which will also cease when the arahanth dies.
Re-experiencing of the cessation(nibbana moment)/phala-samawatha/samadhi without perceptions
Ariyas, especially (aparently) those with jhana, can experience the nibbana moment/magga-phala moment repeatedly by entering 'phala'/'fruit' (of the practice). (see Progress of Insight by Mahasi Saydaw).
Nirodha samapatti/Attainment of cessation (?)
This is a special state of cessation or nibbana which can be attained by Non-returners or Arahanths who have developed the formless jhanas. That is having done previous vipassana, thereby destroying the fetters of craving and aversion these ariyas are bound to samsara in a very 'weak' way- hence when they attempt to go into a higher jhana, than that of the highest arupa jhana, they end up in Nirodha- complete sensory cessation. Since each succeeding jhanic level of is more refined than the earlier/grosser ones, it stands to reason that the most subtle, is the highest bliss. ie Nibbana is the highest bliss.