OK, let us not beat around the bush anymore. What are the differences between the two. Most readups and product information tells you that the MC-505 is built in. So are all the functions of the the jx in the mc. What are some of the differences. (besides the d-beam!)

The D-Beam is one of the major differences as you mentioned. The other difference I know about is there is an extra set of patches on the JX-305 that correspond to General Midi. That is why you will see a difference in the total patches; the jx-305 has an extra 128 patches.

bluewolf