I bought my Small Stone through Analogman. He makes some modifications so that there isn't a volume drop when it is switched on. He did the same thing to Memory Man pedal too.
As far as MXR are concerned, the current ones are made by Jim Dunlop and shouldn't really be badged as MXR. The build quality is supposed to be pretty poor, and they have everything mounted on the PCB unlike the original MXR's - obviously it makes it near impossible to repair if it goes wrong.