i have the hds10 and love it. The company did have a minor problem with a few of the units at first but just make sure that the unit is updated. I believe lowrance held back the hds 10 and 7's and the problems were with the smaller units that didn't get the update. As for mine i haven't had any problems with the unit, it is very reliable, it is very user friendly and i think you would be very pleased with it. As for maintenance, just unscrew the knob and bring the display in during the winter and you are good to go. As for service you will hear tons of horror stories about the company. I personally have dealt with them twice in the past, and haven't had a single problem in fact it was my fault one of the times as i dropped an older unit and cracked the screen and they fixed it for free, maybe i'm one of the lucky ones who knows. A friend of mine bought his unit through cabelas and says it's a good way to go because they will take care of the problem for you. Hope this helps