PP,
Sportingbet dropped their 5c bonus a few months back and I believe only pay maxidiv on Metro races now.
I find Centre racing pay maxidiv on the widest range of meetings for win bets.
Dialabet pay maxidiv plus 5c on Metro races for the win (and best of two totes for provincial). Dialabet also pay best tote on place. As far as I can understand their little book of rules they pay best tote PLACE on Metro and provincial but I haven't tested that out.

KV