Since my association with BDM in 02 I've known of three frame manufacturers they have used.
Daytec
Rolling Thunder
BDM
Seems they are making all in house now starting in late 05.
Rolling Thunder caused all the problems in 03 when the backbone was breaking under the tank causing a recall. Haven't been anymore problems with them to my knowledge. There has been some problems with swing arm alignment but not sure if it pertained to a certain frame type.
My 05 has a Rolling Thunder and I've had no problems with it. I seem to remember when I bought mine in 04 that I could have gotten the Daytec and it would have been a little shorter in the pegs but not absolutely positive.
Later,
Ray