Also I have noticed that the Jewish TV channel is availble on 119. I think D* channel guide ,which has JTV would, make the default of installing a 5LNB dish.
The 5 LNB is fine if you are west of the Mississippi, but many of us on the east coast cannot get LOS to 119. If the 3LNB was not an option, then our only option would be SD. Before the 3LNB was available, DirecTV would not install HD for me, because there was no LOS to 119, and the signal from 110 was less than accetable. At that time, the only thing I wanted from either of those satellites was ESPNU HD. I convinced an independant contractor to install the 5LNB and "fake" the system to say that it passed. ESPNU was moved to the 103 shortly after that, and I lived with the guide errors for years until I was able to replace the 5LNB with a 3LNB.
The only locals that are on the 119 are in the west, so having the 3LNB as the standard for everyone else makes sense to me.