fairchaser":1ffbbmcg said:
Apart from screen size or ease of use does one brand have any features that are clearly better. I've seen some with chirp technology, 3D vs 2D, side scan vs down scan, internal maps, graphing, etc.
dont buy one without chirp, the difference is night and day. it rejects a lot or the unnecessary noise from the sonar return. as cheap as some of the chirpunits are on clearance right now it just doesnt make sense to buy a non chirp unit, unless you are just going to use it for depth/nav/mapping.
all of the brands have their strengths and weaknesses. hummingbird has better side imaging, lowrance has better down imaging(may not anymore with hummingbird mega and some of garmins xducers, and garmin is light years ahead in 2d and panoptix type technology. thats not to say garmin or lowrance's side imaging is not good, it is, they are just a little grainier. their transducers are designed to show more on fish returns than detail, where as hummingbirds narrow beam xducer shows higher degrees of detail, but will show fish if the settings are adjusted. garmin and hummingbird's side imaging will reach out past 100 ft usable on each side, where as lowrance is about 80ft before it goes dark. (may not matter much as most folks scan at 60 ft max on 7" and 9" displays).