Reports here have been pretty sketchy.
Complaints have ranged from disappointment at the relatively shallow depths it operates at (ranging from "useless beyond 20' " to "okay to about 90' "), as well as the general lack of enthusiasm over Humminbird's build quality.
Have never seen a report that was enthusiastic (except for one, and that was just after it made its way onto the boat.)
I have only owned one Humminbird product (and that was a gift); and have vowed that I would never own one again (though, to be fair, I might consider one of the 3D units, if they start getting better reviews.)
YMMV, of course.