I just installed a Garmin 521S and I used it with the Garmin Lake Winni map ($10.00 downloaded) last weekend. Our boat is a 23' Wellcraft 232 Eclipse. It worked very well and does have route tracking/memory and way point storage. I have not installed the included depth sounder/fish finder yet but will be doing that soon. I recommend having the depth sounder/fish finder option even if you already have a depth guage in your boat as you get bottom detail which can be very useful. They are not cheap - it was a gift from my wife for Xmas and was between $500 and $600 online.
The Garmin Lake Winni map is very good and the only caution is that bouys/markers do move around so do not rely on the maps accuracy for their location. It is close but not right on. . Screen visability in the daytime is excellent but I have yet to use it at night and I expect it will be just fine.
There are cheaper GPS' out there but in most cases the screen is smaller and there are less features. So as the old adage says...you get what you pay for. Be sure of what you are buying.
BTW I have a Garmin Nuvi 200 with the Garmin Winni map. It just does not cut it for night time cruising. The screen is just too small for night use.
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Just Sold
At the lake the stress of daily life just melts away. Pro Re Nata
Last edited by Just Sold; 06-11-2012 at 09:57 AM.
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