This is like asking Canon or Nikon.. Honda or Toyota Hybrids..... is better...
I use the Garmin NT2012.20 which has MfM map data + the JCV most of the time. The down side is the older map data used on this map. Hence, I've to switch over to our weekly map if I need to find up to date stuff. I also use MsM for this purpose. We Malaysian are spoil for choices for GPS Maps to a point where making a decision to use which map becomes a problem....

this won't happen if we need to pay for it... how many maps would you buy?...
