KMC 93 vs 73 differences??

[d3v]

Besides one being half chrome plated and the other being full grey, can anyone let me know if there are any other differences between these two 9 speed chains? For example is the x93 version more durable?
To clarify, these are the models...

KMC 9 speed x73
KMC 9 speed x93

[Bill]

When I was on KMC's site I could not find the "x73" but I did find the x93.
Here is the link to the "x93" .... http://www.kmcchain.us/kmcproduct.asp?pid=4814&bsid=32&ssid=585 .
From looking at it seems to be a pretty nice chain. The x73 is probably an older product.?

[d3v]

Yes the x93 is the best chain you can get. I've had mine on the bike for well over a year and it's not even 0.75% stretched!

[Bill]

Newer technology is the only thing I seen different over the years with KMC.

[cyclerUK]

The 93 is "half" nitrided coating.
The 99 is fully nitrided coating.
So I would assume the 73 has no titanium nitride coating. ??

What all that adds up too I don't know, but the 73 costs less.