I have used Elements 3 for a long time and don't understand you comment about the shims, as can be seen in Nicks post the shims are identical in size and are decent stainless quality. Are you sure you got Elements 3 not the R line? I just put Elements 3 pads, calipers and rotors on my Outback and like every other install no issues whatsoever.
My own experiences with Akebono is they are not great, low bite especially when cold, short pad life and noisier than others. My Saab had them when I bought it and they sucked terrible, I put Textar on that one and ATE on the older Viggen and they are so much better. I cant decide which of those two is better, both are excellent.
If I didnt use the Elements 3 I would use Advics or OE on a Japanese car.