It is good. Since you already using single speed and also use SLX crankset better get some protection on that. You can wait 10.10 or 11.11 to get it. May be the price you get is cheaper than me. There have a lot model to choose too eg DX001 DX002 DX005 DX009.

Besides my 126L CN-M6100 arrived too. Cost me around Rm7x.