I would go for an integrated, not receiver, unless you're specifically looking for something with a dial.
But the problem with some old Sansui is they (for several years) used a glue to hold larger caps to PCBs. The glue becomes corrosive over the years, and eats away at component leads. I had a couple of diode and resistor leads break apart while removing components. Rusted through inside the glue lumps!
I've got an AU-717 integrated exploded all over my workspace, getting rebuilt with 150€ of new caps, diodes, thermal paste, etc. It's a beast, built like a tank, beautiful IMO. But getting more and more expensive every year it seems. I wouldn't really trust the ones on eBay that say they've been rebuilt... From doing it myself, I could imagine how many hours it would take to do it right (even by a pro). But it makes for a really fun DIY project, as long as it isn't your first.
Having said that, I've done a lot of leg work building part lists, broken down by board. If you went down this route, I'd share the lists. Or maybe take on the job if you found a nice AU-717 and wanted someone else to do it!