I will agree with carbide for pistol dies but Brian Enos was talking about rifle dies where the price for carbide isn't worth it since you have to lube the case with both dies, (unless it's a straight walled rifle case).
Now as far as using lube and a pad I suggest trying the spray lube. I use the Frankfort Arsenal brand, place 20 - 30 case in and aluminum tray, give a it couple of sprays, let it sit a minute or so and resize, no muss no fuss, works great. I haven't used a lube pad in years for rifle brass.
I'll admit I didn't read the link, thought we were talking about straight walled pistol cases.
For larger batches of 5.56 cases (100-500 pcs) I use Rooster spray lube, shaken around in a plastic grocery bag. Works well, but have to wash them to remove lube. PITA. I need to try the kind of spray lube ( someone help me here) that you can reload without having to remove any sticky crap, or walnut pieces stuck to sticky crap, stuck to cases.
For smaller batches (everything else) I use Imperial sizing wax.