Used 560's are not getting a lot in terms of used sale prices - given the price of the latest version, how many are out there, and the seeming never ending stream of HFM's.
The HEX V2 is a better can IMO than the 560, but different in that its a bit warmer and more forgiving. It also has a wider soundstage and produces more detail. Used it can be had for $650-750, and even in 18 months it should hold around $500.
The Ananda is closer to the 560 IMO, so somewhat more of the same. Some are showing up used at $700-750. It also should hold at $500 for some pretty long period so you could buy it, own it for a year and just pay a fairly small "rental" fee.
Haven't heard the Arya, some say that it's closer to the 1000 V1 than V2. Dunno. But I do surmise that a year from now used prices will be under $1k given the slide on other HFM products. Look at the 1000 V2 - quite a few going for $1650-1800 lately, that's a big slide from list.
That's all I needed to hear. Thank you. I decided to keep both sets of my he560. Maybe in another year I'll try something different.