What's Your Advice, Used Audio Research LS15, Or Freya+?

I cant speak on the Freya+ but I have had a ARC LS15 for over 15 years and its a great preamp. I've change tube to Tele 7dj8 and its sounds fabulous. Its now in a second system with a ARC LS25mki taking its place.

mktracy, thank you. I appreciate the input.

ARC is in a different universe compared to Schiit.  Schiit is built to very low price points while ARC is not.  I would go with ARC anyday over the Schiit.  The ARC will retain its value much better as well.

Over on AudioAsylum, several people have bought the Freya+ and have very nice things to say about it. At $900, it is not particularly cheap, though certainly not priced in the high-end category. 

If you want a new ARC preamp, you're going to spend several multiples or more than what the Freya+ costs, though you can get one of ARC's discontinued and much older models on the used market in roughly the same price range as the Shiit.