Axxis Deluxe
No experience with them but the best available information is that the only time you might notice a performance difference with the Axxis Deluxe pads from OEM is if you plan on driving at a constant Autobahn/race level (which, on public US roads, isn't very likely).
Supposedly, that's why the OEM pads dust so badly. They're designed for both normal and extreme high performance use but with no squeal, warm-up, hard pedal pressure or rotor damage. The trade-off for this is high levels of dust.
As a side note, I've heard that the BMW OEM pads (and the other German marques, as well) really are used to their full potential on the Autobahn. If you're driving in the fast lane, and doing so at a relatively slow speed, a much faster moving German driver in the same lane will fly up to within inches, literally, of your rear bumper and slam on the brakes, just to get your attention. For that kind of driving, flawless brakes are an absolute necessity.
This sort of thing isn't likely to happen often in the US, lest you care to be involved in a typical 'road-rage' incident.