I have the L-580, which I bought new in Japan back in the day. I will never sell it. Sounds like nothing else I've ever heard; it's distinctive. It's also a monster; huge, heavy, intimidating.
I am going for the L-580. The guy what's 5Clams for the L-580 (it's been fully recapped)..not sure if this is a good price?
I am also going to pickup a Sansui AU-999 that I have been eyeing.

I do not know what a good price would be; but I recall paying something like $350 in Japan (actually Okinawa) in 1983. So whatever inflation would turn 1983 dollars into today, plus the advantage (if any) of being able to buy it in Japan. I have a parts unit as well; I bought it on eBay a bunch of years ago and I recall paying 200~300, something like that. It arrived smashed, seller didn't pack it well. The thing weighs a ton and the huge transformer on the right hand side makes it lopsided; there is no easy way to carry the thing, it's more of a stagger when I move mine. Recapped would certain sound like a good thing to me, but I guess it depends on how well it was done. A reputable repair shop butchered mine, even causing some PC board lifting at one point (hence the parts unit).
You might say I'm a Luxman fan. Particularly of integrated amps from the same series...sad.
Stack O' Luxman by Wigwam Jones, on Flickr
I would put a vote in for the R117. I have collected 5 over the years,
I would put a vote in for the R117. I have collected 5 over the years, along with some other very nice separates audio gear.
While I do listen to the other gear I find that the R117 coupled with a Luxman TP117, recapped with Elna Silmic IIs , is probably the best top to bottom front to back sound you will hear without going deep, and I mean real deep, into your wallet.
Most people don’t know how good the amp section on this unit is because they use the internal pre exclusively. I am currently in process of recapping an R117 to see if that improves the pre performance. I may also redo the op-amps if I get decent audio improvement with the recap.
My advice would be go with the R117 and a good external pre. You will probably never find something that sounds better for any sane amount of cash. Providing that you have good source material, good players, and of course good speakers.
LOL, sorry I was unclear. I currently have 5. Three bought working, one which has since stopped. I've been meaning to get to that one to fix it. One I bought non-working and have repaired L and R channel on the amp, replaced a switch/selector IC in the pre section, and hard wired a tone defeat switch circuit into defeat mode to get it working again. That is the one that is going to be recapped. The power supply has already been redone with Elnas and I have been testing it for a week now. I will start on the pre board this weekend. And the last is my pride and joy a NIB and never plugged in unit I am saving, for what I haven't figured out yet.
As cool as the new one is, keep in mind that having sat in the box, it likely needs a recapping too.

I was just talking to my local tech about scenarios just like yours the other day, oddly enough. His feeling is that equipment that has been sitting in a box unused starts to become suspect after 5 years, gets bad after 10, and after 20 is in need of a full recap. He said he has seen a couple of 20 year old pieces that have actually gone up in smoke, usually after about an hour of use. The other thing to keep in mind is with it being the way it is, even with the original components in place, it will sound nothing like it was designed to. Everything will be so far out of spec.
Just wanted to pass on what I heard for your safety and the safety of your gear.