I looked long and hard for a cheap digital answering machine with 3 or more mailboxes and more than 15 lousy minutes of memory.  It's a pretty short list.  The GE 29869GE2 gets the job done for a good price.  It's cheaply made with lightweight plastic but I have no issues with reliability or interface.  I wish the audio quality were better - but I can live with it.  I also wish my cat didn't erase the outgoing message by walking on it so often.  Moderately recommended.