I've done an initial trial Mike on a few FR and the WO 0.8X II leaves the others for dead. I would like to have tried the WO III but I wasn't able to get hold of one. The II does a fantastic job and focusing just snaps into place. I really had to fight to get even remotely good focus with the Meade and Celestron 0.63 reducers and the quality of the outer edges was really poor. Steve Mogg has a 0.66 reducer that does a similar or better job than the Meade ones for only about $70. Unfortunately though there is CA towards the outer edges. The center though it pretty good. A bit like the Meade and Celestron ones though, getting really crisp focus was not as quick as using the WO. Mind you the WO is 6 times the price of the Mogg one. I wouldn't even consider the Meade and Celestron ones now after using the WO at only about $40 more in price.
I'm waiting for the weather to improve a bit so I can redo the trial as I think I can get a better job done on the focusing on the Meade, Celestron and Mogg ones. Just to make sure
