The LF2100 does everything the LF2000 does and more!
Check these features:

• Sonde locating at 512 Hz and 16 Hz (ductile iron)
• Line locating at 8 KHz, 16 KHz, 32 KHz and 64 KHz (see our BuzzBox)
• Trace energized 60 Hz power lines
• Handle vibrates for "heads up" locating

Same easy-to-use LF tradition.
A great value at $1600 (with case)