Buy the double density double sided (880k Amiga, 720k PC) floppy disks for it. Some people say they have no trouble with high density 1.44MB disk, but they are meant to be used with a stronger magnet found on PC high density drives.
Indeed, I also experienced that 1.44mb are a bit less reliable than the 720kb ones.
What I mean is, if I can find 720kb floppies and it's not too much fuss, I
prefer them. Don't hesitate to just put some tape on the hd disk hole and just transfer your adf image to it. The only thing is that the data deteriorates a bit faster (you only have to re-write the adf to it)