another here for the garmin 240
I'm not one to rely much on fishfinders, but I have been using a garmin 240 for a couple years now and for the money I don't think you can do better. It shows depth, fish, temp, thermoclines, speed and even has a digital voltage guage (this is something every boater should have). It's menu driven and if you can get by on a PC, you may as well throw the manual out; very easy to use. I think you can do without the speedometer though, it requires calibration do the variances in hulls and even after that is only going to tell you speed in relation to the water (this is pretty useless unless you want to brag). GPS is the only way to go for accurate speed, and I'd recomend a garmin 176 for that.
my .02
I'm not one to rely much on fishfinders, but I have been using a garmin 240 for a couple years now and for the money I don't think you can do better. It shows depth, fish, temp, thermoclines, speed and even has a digital voltage guage (this is something every boater should have). It's menu driven and if you can get by on a PC, you may as well throw the manual out; very easy to use. I think you can do without the speedometer though, it requires calibration do the variances in hulls and even after that is only going to tell you speed in relation to the water (this is pretty useless unless you want to brag). GPS is the only way to go for accurate speed, and I'd recomend a garmin 176 for that.
my .02
