I do like them with the op machine, so far so good its been about 2 weeks and the pad holder doesn't pull the threads out when pulling them off unlike the glad pads can sometime although if you cut the glads threads they don't continue run.
There is almost too much friction when I use it with the 175, but if I use it right after the prespray it's not too bad. So with the action you get with these combined with the op it does a great job.
They have held up well with washing so far, and seem to hold there share of dirt.
I still use microfiber or 100% synthetic pads to get pet and people hair out. I'll post again after another month or so.