The BAMD and BAMM are essentially the same model; one is the BAM "Deep Layer" and the BAMM is "Medium Layer." The BAMM only applies to weak, sheared tropical storms and generally should be ignored.
The BAM models are old and pretty primitive. Not totally worthless like the A98E, but not to be taken all that seriously; as mentioned they're very sensitive to initial motion and in many cases the init motion is off.
Generally the top model is the GUNA, which is an AVERAGE of the GFDL, GFS, UKMET, and NOGAPS models.
Well the two BAM runs are sure scaring the hell out of some people tonight.
Here is a link I have almost worn out lately. It has a sat. loop with superimposed forecast points.
http://www.ssd.noaa.gov/PS/TROP/DATA/RT/float-vis-loop.html