It might not be the best but is cheap.

http://shop4.frys.com/product/5638001

# Cordless Telephone with Answering System
# 4 Pieces in Set Includes 2 Cordless Handsets, Base, Charging Cradle
# Features: Speaker Phone with Volume Control
# Modes: Volume Control
# Audio Features: Customizable Ringtones
# Other Features: Digital Spread Spectrum Technology
# Frequency Range: 2.4GHz
# 14.0 Min. Record Time
# 10 ...