Agfa 100 used to be my mainstay in 8x10. Actually you used to be able to get Agfa 25 in 8x10, they discontinued that around the same time they killed Portriga Rapid in the 1980s. I have alot of 4x5 negatives I shot on 4x5 Agfa25 processed in beutlers and rated EI 6.
I think I might have about 3 sheets left of APX100 4x5 but don't expect you would be interested in such a small amount. It used to be the cheapest 4x5 film available.
Dennis