There's also the possibility of people hearing what they saw in a curve. On the one hand I was also thinking I don't really need an open back anymore as the HD820 sounds as open as some open cans do but on the other hand the HD800(S), being the open version of these, is a whole other level of open compared to most phones so I'm keeping those. The rest of my cans, mainly a bunch of pre- and post- HD600 iterations all give such a different sound compared to one another and aren't that expensive so I don't want to sell those as well. Second hand they'd go for not much more than 200 and they're worth much more to me so it'd be silly to sell them. Pretty happy with my Senn collection I must say. I tried the Stellias and while they have many good traits (I like Focals even though they sound very different to Senns) they didn't sound open at all compared to the HD820s and Utopias. They gave the feeling of having "more bass" than the HD820 but didn't reach as deep and weren't as clean. A bit muddier than the HD820's bass though reviewed on their own one could hardly call the Stellias bass muddy. The mids were a tad warmer which I like. Comfort wise, however much I like the comfort of all Senn headphones the Stellia's, like all Focals feel like they were molded around my head. I decided not to buy them as the main thing I'm looking for in a closed pair of phones is a wide space/soundstage because they will be used mainly late a t night with a Realiser. I think it's impossible to do better than a HD820 for that application. By the way, anyone here tried the HD820 or HD800S with an ifi PRO iCan or iDSD? Any comparisons with the Senn amps?