Quoted from The_Dude_Abides:My SM is just as solid as the Williams no doubt requiring less work and playing just as good.
My SM has never had any problems other than a LED light slipping out of a spot light.There is something wrong with my 2 Williams pins all the time but I still like them.Stern may be a little lighter but solid too (STTNG is a heavy wide body that almost killed me getting down the stairs)
SM is great and is advanced in the software and more reliable than earlier era"s of pins!!!!