Metz 50 AF-1 or SB 700

[Zenki]

OK, another question for the gurus. I am planning on getting a flash for my D700. I used to have a SB600, and really liked it -- the build quality, power, size, etc are all fantastic. I am debating between the newer version of the SB600 (which is the SB700) and the Metz 50 AF-1

For those familiar with both models, what (if anything) would I be missing if I went with either one

[reaction]

Some triggers say they don't work with SB6/700.
I have no idea why that would be. Not sure about 3rd party either.

That's all I can think of.

[I @ M]

For those familiar with both models, what (if anything) would I be missing if I went with either one

I'm not familiar with the Metz but I have looked at and used the SB-700 and if you are quite happy with everything about the SB-600 why even think about any other make?
The 700 has a very user friendly interface, plenty of power for general use and the build quality is the same as previous Nikon models.