Alright, so I received the earpad rings today which let me give the Brainwavz Hybrid pads (non-angled) a shot. Long story short: I like them better than the focus pads, however I won't be keeping them. (wait, wha?)
First off, they are much softer and more comfortable to me. Not that the Focus pads are uncomfortable, these just feel better (especially for glasses-wearers like myself).
By and large, I find the sound of the Hybrid pads to be an improvement over Focus for a few reasons:
1. The +/- 4kHz upper mid/lower treble spike is tamed considerably, resulting in a smoother and more balanced midrange
2. There's a bit more upper treble "air" which I find the stock HE560 to be slightly lacking in
3. Mid-bass and lower mids get a bit of a bump, resulting in a warmer and fuller sound, sub-bass remains the same
So why won't I be keeping them? I found the mids to be tamed to a degree that I found the overall signature a bit boring, the opposite extreme of how they sound in stock form. Secondly, and most importantly, there are numerous measurements out there of the HE560 with FocusPads, which can serve as a guide for owners (such as myself) to accurately EQ as we wish. Seeing as how I lack measurement equipment, and no measurements exist to my knowledge of the Hybrid pads on a HE560, I would be able to EQ to some degree but without the same level of accuracy. So even though I prefer the Hybrid pads to FocusPads sans EQ, my ability to dial in EQ on the focus pads makes them the winner for me.
Hope someone finds this helpful