Compared to the pads I made based on jerg's design and modulor's guide, the Q701 pads give me more room. I felt like the drivers were closer to my ears with the jerg pads. I have no idea if the angling of the Q701 pads helps the sound, but I'm pretty sure that, plus the type of foam (slightly stiffer), helps with the spacing issue.
Give me a day or so and I'll do a quick comparison. I'll try to give some subjective sense of the difference in sound, too. I did not slice and dice the AKG pads. I did attached the HE-500 mounting ring using the double-stick photo tabs (per modulor's guide), as well as the back vent using Creatology foam. Depending on how the mounting rings look after I remove the pads, I may skip all that and just switch between pads. I'd say it's a safe bet I will do that, as it speeds up the process.
Thurston, any pics of the Q701 pads mounted on your HE500?
I sold my K702s a while back, but really don't remember the pads being angled. Maybe they were and I just don't remember...