The 210 chassis takes a 25" blade, right? I've never seen such a thing at a McParts store - are y'all buying them in the aftermarket? The 124 chassis uses a 24" blade. Like most everyone else, I'm using a Bosch microedge. Works great - no smearing, quiet, lasts a long time. It doesn't rain a heckuvalot here in Dallas, so I usually change them ~2 years, and they aren't really worn out at that point.