I have the m4f in my hoped up 235 and I´m quite happy with it.
Now I´m (re)building an 261. The m4f specs are close to the 261 stock cam specs so there wil be no big gain here.
The Bulldog features the asymetric lobe pattern of the famous Frank McGurg 3/4 cam. Delta was not able (or willing) to grind the original McGurk specs for me so I orderd the Bulldo wich is a tad more rumpy.
I would vote for the Bulldog
Frank
