I just bought the Lowrance LMS - 334 and I love it. I had the Lowrance H20C hand held before but wanted a larger screen and sounder in one package. This fit the bill. I also had the Lowrance Natic path chip for the hand held and it works in the LMS 334 also.
Go to this web site
http://www.lowrance.com/Marine/Produ...S-334CiGPS.asp
and download the Product Emulator for the LMS 334 and play with it. Enable sonar and gps simulator and its just like your on your boat with it. You can travel and steer with the simulator, make waypoints, back track and every thing you can if it were mounted and on the water.
This is a great idea Lowrance has about letting you try out a product before buying. Did I already say I love mine.
Got mine from Gander Mountian in Salisbury Md for $549 plus tax. Full warrenty and is returnable as long as its not been mounted yet and no shipping.
Hope this helps.
Turbo