Thanks Arthur,

The Lexars are fairly on par with the Sandisk Extremes price-wise.

Lexar 800x 16Gb 120mb/s $74.10
Lexar 1066x 16Gb 160mb/s $81.90

Sandisk Extreme 16Gb 120mb/s $66.00
Sandisk Extreme Pro 16Gb 160mb/s $80.60


My other concern is that on Nikon's current recommended memory card list for the D3, they've tested up to UDMA6. (updated 2013)
I'd assume UDMA7 would also work, but sometimes as you know, slight differences can result in the camera getting confused.

I get a little over 600 images on a 16Gb card (14 bit raw). That takes about 20mins to copy to my external drive attached to the pc.