Here's a quote from the Sadowsky website:
"Our Metro Line represents all the basic models of Sadowsky NYC basses but are made by our staff at Sadowsky Tokyo.
The Metro Line offers most of the same features as their NYC siblings including the same pickups, preamp and bridge. The quality of the Metro Line is as high as our NYC instruments."
That quote is the key factor that let me opt for a Metro over an NYC. If they started to offer the Metro line with fretless as an option, I doubt that I would ever buy an NYC. I'm not interested in fancy tops, I'm fine with chrome hardware, and my previous bass weighed over 10 pounds. For my needs, the Metro fits the bill. I have owned my first one for just under a month now, and I already want another one. First one is an M5-24, and I'm tempted to order a V5-24 in Rosewood/Alder.