@nebulae ,
There are quite a few of the Pioneer Elite series showing up on EBay as refurbished, so at least someone thinks they are still repairable.
Given the constraints or your question and the relatively low cost of any of your choices, I suggest you go for the newest version of the TXH series that you can afford. These were known for reasonably good SQ in their price range and a long (though now a bit outdated) features list. Your cost risks ( initial and depreciation) are low and the unit may end up lasting longer than you expect.