Well if anyone is interested how im using all of this (my setup)
i got 3 x WAN
and 2 x failover and 1 x load balance
1st wan = ADSL 512kbps/256kbps uncapped(very little bandiwdth supply in south africa) = fixed cost = provided by 'Internet Solutions'
2nd wan = 802.11a/g 4mbps (at its best of times but atm its just tiny bit faster then above mentioned adsl) = 7gb then after that cost per mb = wireless Linked back to local 'Internet Solutions' branch
3rd wan = 1mbps = link to neighbouring company hosting our web servers = cost per mb = from neighboring company laser link back to local 'Internet Solutions' branch
1st failover = 1st to 2nd to 3rd
2nd failover = 2nd to 1st to 3rd
balance = 1st and 2nd and 2rd
now normally i have select few take 2nd failover option (faster)
else everyone takes 1st failover (cheaper)
never really use the balance
now surelly it would be a good idea to put a schedule on all rules so that at night everyone can only go out the fixed cost adsl incase people run downloads at night and run our cost per mb bills up
i havent had any problems with the failover feature :) very nice to have