The consensus around here seems to be that you can't go wrong with Spicer, but they are a bit pricey.
I asked a related question a few days ago and that was the response I got:
http://www.zcar.com/forums/read.php?f=1&i=506799&t=506799
I asked a related question a few days ago and that was the response I got:
http://www.zcar.com/forums/read.php?f=1&i=506799&t=506799