Not sure of your rating system here but I would go for the Spectro over the M1 even if I had to drive to the other side of town to get it.
As far as the HD oil, other than the standard 360 oil they sell which is a good product for what it is I wouldn't even use it myself.
As far as the HD oil, other than the standard 360 oil they sell which is a good product for what it is I wouldn't even use it myself.