Looks like I can get a good price on the MK25/S600 black tech for about CAD500 less than a MK25EVO/S620ti. Since I need to get 2 sets, that's a savings of CAD1000 before taxes. That's significant enough to sway me back to the MK25/S600, unless there's some reason I shouldn't get the old model in black tech. Does the black tech finish scratch easily or otherwise not good? What do you think?