How much faster is the EYE-FI class 10 16gb card?

Hi,

I'm thinking of upgrading 3 of my Eye-Fi Pro X2 8gb cards(class 6) to the 16gb class 10 versions.  Just wondering if anyone who has the older 8gb noticed a significant speed increase after upgrading to the 16gb.

I shoot RAW in slot 1 on D3s and JPG BASIC in slot 2 using a Jobo SD/SDHC to Compact Flash Type II adapter with the Eye-Fi 8gb.

I'm not sure if the slow write times are caused by the Jobo SD card (max 16.6 MB/sec advertised transfer rate) coupled with the slow class 6 Eye fi 8gb card or a combination of the two.  Basic JPG's are about 900kb-1.2MB.

Anyone noticed faster speeds using 16gb card on a SD-CF converter?  Thanks.

I use this combination to transmit from the iPhone on deadline.