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

@zerobias the new modal with detachable cord has Infini Caps which where a upgrade to the REL cap in the older modal. If yo sent the older modal out to ARC for a cap upgrade it would cost about $600. I have had my LS15 for 16 years and am the second owner with no problems at all, works perfect and sound great.

I actually just returned my Freya Plus and Loki after comparing it to this. 
https://www.youtube.com/watch?v=fS4LwM7omSE

Just want to thank all who responded, here and by PM. The input is greatly appreciated. I found and purchased a very late model LS15 with all of the upgraded caps, the power supply, and the detachable power cord. Looks very nice from the pictures. I hope to have it Friday. Now for a headphone amp, it does not have a headphone jack. Thanks again, and happy listening.

Good choice zerobias. Once you get it start thinking about new tube and get a good PC to bring out the best sound. If you need a headphone  amp I like the Drop/Cavelli CTH amp. It goes for $175 on Drop.com and I love mine using with Grado SR325i and HIFIman HE4xx from Drop.