In my experience most filters should work in the Bunn.  The Bunn

coffee makers run the water through fast, so you need a coarser grind to

make it work right.  Too fine a grind then slow going, and over the filter.

A Bunn requires more ground coffee per pot.  They also waste energy by keeping

the water hot all of the time.

If you mill your coffee each time, then set it to a coarser setting.

We like Caribou whole bean, and use a Cuisinart burr mill.  Much better

than a coffee grinder, that just turns it into powder.