Recently had the opportunity to listen to a friend's JC3+ and compare to my Eros. Was pleasantly surprised to find that while the JC3+ is indeed a superb phono stage, the Eros is very close indeed!
JC3 had a little more solid soundstage and noticeably better mid-bass definition. I think the Eros makes vocals sound more human and that's probably the tubes talking.
Bottom line: Love the Eros. Great sounding, looks cool and allows tube rolling fun.
System: Odyssey Khartago Stereo amp/Rogue RP-1 Pre/Empire Turntable w/Zu Denon 103 cart/Jamo Concert 8 speakers
