How to create bonding between two ethernet interface?

I have link witch 2xbullet M5

/ BULLET M5
eth1 / \ eth1
RB 1 \ / RB2
eth2 \ BULLET M5 / eth2


How to create bonding between two ethernet interface?

http://wiki.mikrotik.com/wiki/Manual:Interface/Bonding

OK but who is the best mode?
I test with balance-rr, but have one problem.
When i start speedtest.net → download and uploud is very low.
If i download toreents speed = eth1+eth2