Hopefully somebody will have some ogx360 in stock with the new revision soon, been wanting to buy one for a while but everybody is out of stock most of the time
Apparently the Focus and Conexant chips have the Cr and Cb subsampled to half in the horizontal direction, so I guess the 1.6/1.6b is best if you're not doing a HDMI mod.
If you are doing a HDMI mod, then 1.0 with 128MB RAM with 1MB BIOS is awesome.