How funny a combination. 3 of those amps are one's I recommend people listen to for themselves becuase they are so different to my ears. You will come to strong opinions on your own.
I almost never get to listen to JR so I won't comment on them at all.
Pass - Not my cup of tea, at all, but they seem to be the most speaker dependent.
Ayre - Very smooth, has a kind of darkness about them, sometimes the effect is as if they are sucking noise right out of the room. It's ... honestly a little odd but if you like velvet black backgrounds from which your music shoudl emerge this is your choice.
Luxman - Among the very best amplifiers I've ever heard. Best traits are awesome extension at the bottom and top octaves along with an absolutely tube-like midrange to treble presentation. Absolutely not a hint of grain or edge anywher while at the same time providing effortless extension. Lesser amps make the same speakers sound smaller by comparison.
I strongly believe you should listen to the Pass in contrast, because you might find that like many here, you prefer it, or you really don't like it, and either way I don't think it will be close, but who am I to tell you which you should like? :)
Please enjoy listening and let us know what you decide.