I bought 2 pairs of those one for my m1060c(the sheepskin m1060 ones) and one to test with other headphones. I think I prefer the v1 (haven't tried v2) Aiva pads between the two but they aren't bad, just gotta actually stick them onto the locking rings or they easily come off. To be honest though, my m1060c is in my drawer and I just switch between th610, hf 580 and m350 planar iems.
edit: actually after thinking about it just went ahead and closed my m1060c again. They really are pretty fantastic closed planars and while open is a little better its a bit redundant for my current cans to have that many open planars and no closed.
Yeah I had same issue with 1060 pads being too big for rings, sometimes slipping off rings. The other 100mm pair with perforated sides I mentioned in my earlier post are smaller and fit better but because their hole is off centre (not apparent in the marketing pic) I push the pad backwards so there is some overhang at the back (see pic).