Everyone has there own preferences. With that said and my experience in seeing and installing, you can't go wrong with Garmin. There Customer Service is A-1 and I see many older units still operating. I can't say the same for one of the others in a previous post. I have a 12 year old Furuno FCV 600L bottom machine on my boat and it operates the same as day 1. As well, my chart plotter is a Standard Horizon CP 150 and just as old. Had a few glitches with that but again there customer service was right there. Furuno has some new combos out and may be worth checking out.