http://www.pleasanthillgrain.com/Bos...MUM6N10UC.aspx
this is who i went thru when i got mine about 6 years ago. it never stops working and is absolutely fantastic. i put it to a test with one egg white in that great big bowl and it whipped it and peaked it perfectly. i know they are kind of spendy but definitely worth it and pleasant hill grain has some awesome things!!