This is like the ford vs chevy and coke vs pepsi . Everyone his their own experinces, preferences and taste. In addition those offering opinions here also have affiliations (sponserships) with some of the boat manufacturers, fishing eq., batteries and electronic eq. So It would be nice on this forum if those who have relationships would disclose this information when offer opinions. Anyway, I'm looking for one as well and I believe that both hummingbird and lowrance to be equal in quality (someone will take exception to this). The lowrance models can include lake maps for the entire US. The lake maps are avail with hummingbird but you buy them for the regions. Just be prepared to part with $800-$1000 for smaller screens and $1,200 to $1,500 for larger screen. OOUCH!