I have a pair of Adidas Powerlift 3's I'm replacing these with.

1. These are slightly narrower.
2. The lacing/strap seems to lock my foot in notably better.
3. The heel/sole is definitely harder.
4. The bottom of the sole is stickier, although it might just be that they're new.

I'm squatting 300/deadlifting 400, if that places it.  I didn't have any trouble moving from a 1/2" heel to the 3/4 heel on these for deadlifts, no issues at all there.

Would buy again/would not buy Powerlift 3's again at my current weights.