While reading (ugh!) the old LJ Reviews a while back, I came across the Mirka Galaxypaper, which suggested greater/faster wood removal. Had to give it a try as I'm always ripping my Abranet on small sharp pieces. That's why I liked that format... it was in-your-face, even though I was not looking for an alternative sanding experience.
The Galaxy is certainly more robust and seems to sand marginally quicker/better, but an absolute pain aligning holes... and the holes being small, it's quite a bit of mucking about... and that's after I chase down my Mirka as I tend to forget to turn the power off as I flip it over and lay it on the workbench to align the holes.
In my opinion (nothing technical testing) they are better, specially for sharp cornered pieces, if you bother to align the holes, however, if you are an anti-dust freak, you may need to think twice. I sand small pieces, in which case it would be better, but also because of the size (limited sanding per piece), I regularly change out girts and I am opting for the convenience of just slapping on the Abranet without fuss.
To me, convenience is paramount, so I'll probably use up my supply and then stick with the Abranet.
Though I believe they are toying with a more robust Abranet type of discs. I also believe the Abranet Ace is a tad better than the standard. Though don't quote me as I'm not renowned for a lot of investigative reading (ugh!).
If your first cut is too short... Take the second cut from the longer end... LBD
