I don't have any beamshots, but M60F right now has a diffuser lens on it, so you are not going to see the difference between 8deg and 20deg in the beam shots.
The M60F really is just a very wide flood, there is literally no hotspot. So if your primary use is indoors I would recommend the M60F, if it is outdoors and you want good near field illumination it also words well. Otherwise if you want a more typical beam pattern with good throw then get the M60.
I'm not sure if the website is out of date, or they consider this diffuser a 20deg beam.