"I am completely non-analytical, I don't care whether I can hear the artifacts in music, just as long as it SOUNDS GOOD."
Ya, sure, you can say that now... but hang out at head-fi for a little while, and we'll see what happens to you!
As you've mentioned, RS-1 should be considered. They will make your toes tap, no doubt. Also, CD3000 and HD650. I'd stay away from the Beyer and AT lines in this price range if you are looking for "euphoria"; nice cans, but not what you're looking for IMO.
Oh, and what do you mean by "SOUNDS GOOD"? We all think differently about that concept. Your comments seem to suggest that you are looking for a pair of headphones that are a bit more exciting and involving, maybe stepped up a bit in the upper frequencies, and this is where the RS-1 shines (well, to some ears - but there are no consensus opinions around here).
The CD3000's have detailed, extended highs and deep, resounding bass (although somewhat muddy at times) and this makes them excellent candidates for rockability.
In this general price range, the HD650's would be my choice for their overall tonal balance and ability to engage the listener without necessarily "exciting" your senses with a skewed presentation (i.e., to my ears, they present most music more honestly than does either the RS-1's or CD3000's). YMMV.