The Nazis had better machine guns. Hard to beat the MG42. The BAR was an ultra-heavy 20 round automatic rifle. You'd think they would have at least made a drum for it. Seems like it would have been better if it was designed as a super accurate semi-auto long range rifle. If I recall, they were full-auto only. I've never fired one.
The BREN was finicky - I have fired one of those, and it had failure to eject problems when I shot it.....not that I got to fire it a lot, mind you.