There are failures with the Mahle stuff too because not many machine shops know how to hone the cylinders properly. I recommend to sleeve all h blocks, trying to save $900 for sleeving can cause you to lose a set of pistons and all the labor for another rebuild plus the cost of new sleeves on top of that.
+1
Theres been this topic of discussion on Hondatech for sometime now. Some people have had good luck with the coated pistions, but in my experience they have failed. If you have an H22a1 block sleeving it is much cheaper because of the closed deck. Have a shop overbore it and press in straight sleeves. Deck it, then bore and hone for your new forged pistions. I've had this done in the past for $500-600 including the sleeves. Just dont try to ust too thick of sleeves or you will hit the waterjacket. Good luck with your build.
Jake