I've only used the e-Q7 too, not the e-Q5. I'll relate to the e-Q7
SE530 ==> e-Q7
-thicker note, more texturing
-less dynamics
-less of a squeaky clean note
-more forward, less laid back
-leaner bass but deeper bass
-more forward highs
-stronger directional cues for sound stage
-less of a pinpoint placement of sounds for the sound stage
-better sense of space, the room, area for the sound stage
-more even, broad response
-less note speed, clarity
-less life-like sound but more believable presence
That's a few expected changes off the top of my head. I think both are good in different ways. I like texture and a broad, flat frequency response. The SE530 fell short on both of these for me and certain aspects of reproduction suffer from it. I liked the SE530 for a week, and then I noticed all its shortcomings and happily preferred the UM3X, Triple.Fi 10, or IE8 over it despite the SE530 being the cleanest sound, most dynamic, and most realistic in sound (in a ghostly way (due to lack of texture)). I find the e-Q7 a better mainstream product in the sense that it's more balanced and better textured, and engaging. It's not the cleanest and most resolute sound though, but it's pleasant, open, and engaging. It's a very likable earphone that will impress many. I still tend to prefer a few other earphones in terms of absolute accuracy though. I'm still a huge fan of the RE252 and feel it's one of the best earphones out there in terms of accurate reproduction. I'm a huge fan of the UM3X, more so if EQed. It's still one of the most revealing earphones on the market. The Triple.Fi 10 is also one of my favorites, still a very high quality note albeit not the best dynamic range, decently well balanced, outstanding note energy and presence, and it's still one of the most fun earphones I've used with great bottom end and top end presence and detail, and it gets better with EQing. Treble is heavenly with the Triple.Fi 10, sweet, sparkly. I haven't used another earphone on the market with a more likable top end.