also remember: nobody will ever really be "pals" with your betta. either he'll see them as adversaries, or just as nuisances. that said, i've had best experience with ADF's, my bettas have always just left them alone, or just chased them off a choice leaf if necessary.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger-all down here on Earth.
Loki/Grendel/Gail/Beowulf/Camilla/River/Bathory/Arwen/Lafayette/Deb/Jack Skellington (soon)