having owned a J(unk) for over 2 years, another for about a year, and a MDM for about 14 months (see my profile pic) I can say that the MDM wins hands down in regards to comfort, access, and feel. The mdm's neck profile was slim, fast, and THIN. The mdm also weighed like 7 lbs (no kidding and this was a 6 stringer). The junks sounds awesome through and through, but when you get your hands on a MDM you can FEEL the difference.
I had a bass with Nordstrand Dual coils and an aggie obp-3 & obp-2. In all honesty I didn't too much care for that electronics package. I think Big Splits or Big Singles would have sounded nicer. The dual coils could get a real creamy tone to them though.
I can kind of sympathize with Tim as to why he calls them J(unks) vs the MDMS. You really don't understand until you have them both side by side. They're both really really good basses, but the J(unk) is really like the under educated and less sophisticated brother of the MDM.