Actually... I forgot to add something...
I've been trying out the Tune-Up RC steel outdrives on my spool, and well, at the moment, not so impressed.
The set I've been running were brand new, and after one day with a 4.5t, already are notched bad enough that I had to sand them down to slide the bearing off!
I am using steel 44mm driveshafts, but given they were lubed up before use, thats not brilliant wear!
I'll be looking to get some Roche ones and see how they compare instead...