I bought this one Dead Link Removed
Completely clear, no marks at all, I generally don't want any marks whatsoever on any screens I have for all my cameras.
The reason I bought it from Rolleiflex.us is because I have dealt with Bill in the past getting a screen for a RB67 and it took forever to get him on the phone (me being in the UK and the time difference doesn't help), patchy email replies and then chasing him for a few weeks to get it done. I've also enquired over email at various times for screens for other cameras and never got a reply.
So, this time I bought it from Rollei and let them deal with the comms side of it. They got the screen in 3 weeks.
Great screen, my 6008 came with the grid screen, Bill's is much brighter and I can accurately focus on anything all over the surface, even in low light.