I haven't heard the other 2, but I own a pair of s3/5 SE's that I bought for about $750 used. I love them. They will totally reflect the quality of your other components: right now I have mine hooked up to a CJ MF2500A, Cary 303-200, Cary SLP-98, etc. But they will never sound "bad", even with much less expensive components.....
Of course you could buy Totem 1-Sigs. for about $1K used instead.....
Of course you could buy Totem 1-Sigs. for about $1K used instead.....