Seagate ST31500341AS 1.5TB

I bought 4 of the 1.5 TB drives on Dec 31 before warranty change to upgrade from four 400 GB Seagates drives. 3 came with SD17 the other with CC1J. I haven't flashed the SD17 drives yet and need to get the firmware from Seagate. I figured I have 30 days to return them if they prove to be incompatible and unapproved with the ReadyNAS. I'm finishing testing the last of the 4 drives in Seatools before loading them. Avoids dead drives. Only one drive had a couple of bad sectors. The others were perfect. I'm willing to wait a little longer to decide whether to load them, but we'll need some input from Netgear about their final determination on compatibility or when they might be able to give a determination. Seagate has had pretty consistent compatibility with the ReadyNAS, but this will be a blackeye that will have me looking at other drives for the first time in a long while. :(