[QUOTE=ready2fish;

I believe the only negative part using a Garmin is you cant run contour lines with you TM[/QUOTE]
Garner also does not support any other mapping than their own..no 3rd party maps, Navionics, Lakemaster, etc ..must look at what lakes that you fish and see if Garmin has maps up to your standards..but you can make your own maps with their new charting app coming out soon..would be a good thing, if of course you need or want that sort of capability..the new Garmin's are quite impressive, and $$$, but all the new stuff is costly..as far as following contours,only Lakemaster maps followed..I have areas that I fish, that the LM map is crap..very generic..my Nav. are better in places, but Minn-Kota/Humminbird contour following couldn't be done..YMMV.........bill