Simrad stuff is great but pricey.
Never did care for Lowrance... Had one and it was nothing but trouble, so did a friend and he had trouble too. Not very easy to use either, but maybe things have changed over the years.
A few thing about Garmins ...They are one of the more easier units to figure out how to use. Customer support is great and I don't think you will find many people say there sorry they bought one even though they maybe have spent more on it than some of the other brands.
I purchased a Raymarine last year and love it. Here is a write up on it but it's pricey and maybe be too big for your appliaction.
http://www.njfishing.com/forums/show...ight=Raymarine